<P> Sound values and conventional transcriptions for some of the letters differ between Ancient Greek and Modern Greek usage, because the pronunciation of Greek has changed significantly between the 5th century BC and today . Modern and Ancient Greek use different diacritics . The traditional orthography, which is used for Ancient Greek and sometimes for Modern Greek, has many diacritics, such as accent marks for pitch accent ("polytonic"), the breathing marks for the presence and absence of the initial / h / sound, and the iota subscript for the final historical / i / sound . In standard Modern Greek spelling, orthography has been simplified to a monotonic system, which uses only two diacritics: the acute accent and diaeresis . </P> <Table> <Tr> <Td> <Table> <Tr> <Th> Letter </Th> <Th> Name </Th> <Th_colspan="2"> Sound </Th> </Tr> <Tr> <Th> Ancient </Th> <Th> Modern </Th> </Tr> <Tr> <Td> Α α </Td> <Td> alpha, άλφα </Td> <Td> (a) (aː) </Td> <Td> </Td> </Tr> <Tr> <Td> Β β </Td> <Td> beta, βήτα </Td> <Td> </Td> <Td> </Td> </Tr> <Tr> <Td> Γ γ </Td> <Td> gamma, γάμμα </Td> <Td> (ɡ), (ŋ) </Td> <Td> (ɣ) ~ (ʝ), (ŋ) ~ (ɲ) </Td> </Tr> <Tr> <Td> Δ δ </Td> <Td> delta, δέλτα </Td> <Td> (d) </Td> <Td> (ð) </Td> </Tr> <Tr> <Td> Ε ε </Td> <Td> epsilon, έψιλον </Td> <Td_colspan="2"> </Td> </Tr> <Tr> <Td> Ζ ζ </Td> <Td> zeta, ζήτα </Td> <Td> (zd) </Td> <Td> (z) </Td> </Tr> <Tr> <Td> Η η </Td> <Td> eta, ήτα </Td> <Td> (ɛː) </Td> <Td> (i) </Td> </Tr> <Tr> <Td> Θ θ </Td> <Td> theta, θήτα </Td> <Td> (th) </Td> <Td> (θ) </Td> </Tr> <Tr> <Td> Ι ι </Td> <Td> iota, ιώτα </Td> <Td> (i) (iː) </Td> <Td> (i), (ʝ), (ɲ) </Td> </Tr> <Tr> <Td> Κ κ </Td> <Td> kappa, κάππα </Td> <Td> (k) </Td> <Td> (k) ~ (c) </Td> </Tr> <Tr> <Td> Λ λ </Td> <Td> lambda, λάμδα </Td> <Td_colspan="2"> (l) </Td> </Tr> <Tr> <Td> Μ μ </Td> <Td> mu, μυ </Td> <Td_colspan="2"> (m) </Td> </Tr> </Table> Or (dz). </Td> <Td> <Table> <Tr> <Th> Letter </Th> <Th> Name </Th> <Th_colspan="2"> Sound </Th> </Tr> <Tr> <Th> Ancient </Th> <Th> Modern </Th> </Tr> <Tr> <Td> Ν ν </Td> <Td> nu, νυ </Td> <Td_colspan="2"> (n) </Td> </Tr> <Tr> <Td> Ξ ξ </Td> <Td> xi, ξι </Td> <Td_colspan="2"> (ks) </Td> </Tr> <Tr> <Td> Ο ο </Td> <Td> omicron, όμικρον </Td> <Td_colspan="2"> (o) </Td> </Tr> <Tr> <Td> Π π </Td> <Td> pi, πι </Td> <Td_colspan="2"> (p) </Td> </Tr> <Tr> <Td> Ρ ρ </Td> <Td> rho, ρώ </Td> <Td_colspan="2"> (r) </Td> </Tr> <Tr> <Td> Σ σ / ς </Td> <Td> sigma, σίγμα </Td> <Td> (s) </Td> <Td> (s) ~ (z) </Td> </Tr> <Tr> <Td> Τ τ </Td> <Td> tau, ταυ </Td> <Td_colspan="2"> </Td> </Tr> <Tr> <Td> Υ υ </Td> <Td> upsilon, ύψιλον </Td> <Td> (y) (yː) </Td> <Td> (i) </Td> </Tr> <Tr> <Td> Φ φ </Td> <Td> phi, φι </Td> <Td> (ph) </Td> <Td> (f) </Td> </Tr> <Tr> <Td> Χ χ </Td> <Td> chi, χι </Td> <Td> (kh) </Td> <Td> (x) ~ (ç) </Td> </Tr> <Tr> <Td> Ψ ψ </Td> <Td> psi, ψι </Td> <Td_colspan="2"> (ps) </Td> </Tr> <Tr> <Td> Ω ω </Td> <Td> omega, ωμέγα </Td> <Td> (ɔː) </Td> <Td> (o) </Td> </Tr> </Table> </Td> </Tr> </Table> <Tr> <Td> <Table> <Tr> <Th> Letter </Th> <Th> Name </Th> <Th_colspan="2"> Sound </Th> </Tr> <Tr> <Th> Ancient </Th> <Th> Modern </Th> </Tr> <Tr> <Td> Α α </Td> <Td> alpha, άλφα </Td> <Td> (a) (aː) </Td> <Td> </Td> </Tr> <Tr> <Td> Β β </Td> <Td> beta, βήτα </Td> <Td> </Td> <Td> </Td> </Tr> <Tr> <Td> Γ γ </Td> <Td> gamma, γάμμα </Td> <Td> (ɡ), (ŋ) </Td> <Td> (ɣ) ~ (ʝ), (ŋ) ~ (ɲ) </Td> </Tr> <Tr> <Td> Δ δ </Td> <Td> delta, δέλτα </Td> <Td> (d) </Td> <Td> (ð) </Td> </Tr> <Tr> <Td> Ε ε </Td> <Td> epsilon, έψιλον </Td> <Td_colspan="2"> </Td> </Tr> <Tr> <Td> Ζ ζ </Td> <Td> zeta, ζήτα </Td> <Td> (zd) </Td> <Td> (z) </Td> </Tr> <Tr> <Td> Η η </Td> <Td> eta, ήτα </Td> <Td> (ɛː) </Td> <Td> (i) </Td> </Tr> <Tr> <Td> Θ θ </Td> <Td> theta, θήτα </Td> <Td> (th) </Td> <Td> (θ) </Td> </Tr> <Tr> <Td> Ι ι </Td> <Td> iota, ιώτα </Td> <Td> (i) (iː) </Td> <Td> (i), (ʝ), (ɲ) </Td> </Tr> <Tr> <Td> Κ κ </Td> <Td> kappa, κάππα </Td> <Td> (k) </Td> <Td> (k) ~ (c) </Td> </Tr> <Tr> <Td> Λ λ </Td> <Td> lambda, λάμδα </Td> <Td_colspan="2"> (l) </Td> </Tr> <Tr> <Td> Μ μ </Td> <Td> mu, μυ </Td> <Td_colspan="2"> (m) </Td> </Tr> </Table> Or (dz). </Td> <Td> <Table> <Tr> <Th> Letter </Th> <Th> Name </Th> <Th_colspan="2"> Sound </Th> </Tr> <Tr> <Th> Ancient </Th> <Th> Modern </Th> </Tr> <Tr> <Td> Ν ν </Td> <Td> nu, νυ </Td> <Td_colspan="2"> (n) </Td> </Tr> <Tr> <Td> Ξ ξ </Td> <Td> xi, ξι </Td> <Td_colspan="2"> (ks) </Td> </Tr> <Tr> <Td> Ο ο </Td> <Td> omicron, όμικρον </Td> <Td_colspan="2"> (o) </Td> </Tr> <Tr> <Td> Π π </Td> <Td> pi, πι </Td> <Td_colspan="2"> (p) </Td> </Tr> <Tr> <Td> Ρ ρ </Td> <Td> rho, ρώ </Td> <Td_colspan="2"> (r) </Td> </Tr> <Tr> <Td> Σ σ / ς </Td> <Td> sigma, σίγμα </Td> <Td> (s) </Td> <Td> (s) ~ (z) </Td> </Tr> <Tr> <Td> Τ τ </Td> <Td> tau, ταυ </Td> <Td_colspan="2"> </Td> </Tr> <Tr> <Td> Υ υ </Td> <Td> upsilon, ύψιλον </Td> <Td> (y) (yː) </Td> <Td> (i) </Td> </Tr> <Tr> <Td> Φ φ </Td> <Td> phi, φι </Td> <Td> (ph) </Td> <Td> (f) </Td> </Tr> <Tr> <Td> Χ χ </Td> <Td> chi, χι </Td> <Td> (kh) </Td> <Td> (x) ~ (ç) </Td> </Tr> <Tr> <Td> Ψ ψ </Td> <Td> psi, ψι </Td> <Td_colspan="2"> (ps) </Td> </Tr> <Tr> <Td> Ω ω </Td> <Td> omega, ωμέγα </Td> <Td> (ɔː) </Td> <Td> (o) </Td> </Tr> </Table> </Td> </Tr> <Table> <Tr> <Th> Letter </Th> <Th> Name </Th> <Th_colspan="2"> Sound </Th> </Tr> <Tr> <Th> Ancient </Th> <Th> Modern </Th> </Tr> <Tr> <Td> Α α </Td> <Td> alpha, άλφα </Td> <Td> (a) (aː) </Td> <Td> </Td> </Tr> <Tr> <Td> Β β </Td> <Td> beta, βήτα </Td> <Td> </Td> <Td> </Td> </Tr> <Tr> <Td> Γ γ </Td> <Td> gamma, γάμμα </Td> <Td> (ɡ), (ŋ) </Td> <Td> (ɣ) ~ (ʝ), (ŋ) ~ (ɲ) </Td> </Tr> <Tr> <Td> Δ δ </Td> <Td> delta, δέλτα </Td> <Td> (d) </Td> <Td> (ð) </Td> </Tr> <Tr> <Td> Ε ε </Td> <Td> epsilon, έψιλον </Td> <Td_colspan="2"> </Td> </Tr> <Tr> <Td> Ζ ζ </Td> <Td> zeta, ζήτα </Td> <Td> (zd) </Td> <Td> (z) </Td> </Tr> <Tr> <Td> Η η </Td> <Td> eta, ήτα </Td> <Td> (ɛː) </Td> <Td> (i) </Td> </Tr> <Tr> <Td> Θ θ </Td> <Td> theta, θήτα </Td> <Td> (th) </Td> <Td> (θ) </Td> </Tr> <Tr> <Td> Ι ι </Td> <Td> iota, ιώτα </Td> <Td> (i) (iː) </Td> <Td> (i), (ʝ), (ɲ) </Td> </Tr> <Tr> <Td> Κ κ </Td> <Td> kappa, κάππα </Td> <Td> (k) </Td> <Td> (k) ~ (c) </Td> </Tr> <Tr> <Td> Λ λ </Td> <Td> lambda, λάμδα </Td> <Td_colspan="2"> (l) </Td> </Tr> <Tr> <Td> Μ μ </Td> <Td> mu, μυ </Td> <Td_colspan="2"> (m) </Td> </Tr> </Table>

O with a vertical line through it greek