<Tr> <Th> Unicode (hex) </Th> <Td> U + 02C8 </Td> </Tr> <Table> <Tr> <Th_colspan="2"> Secondary stress </Th> </Tr> <Tr> <Th_colspan="2"> ˌ ◌ </Th> </Tr> <Tr> <Th> IPA number </Th> <Td> 502 </Td> </Tr> <Tr> <Th_colspan="2"> Encoding </Th> </Tr> <Tr> <Th> Entity (decimal) </Th> <Td> ​ & #716; </Td> </Tr> <Tr> <Th> Unicode (hex) </Th> <Td> U + 02CC </Td> </Tr> </Table> <Tr> <Th_colspan="2"> Secondary stress </Th> </Tr> <Tr> <Th_colspan="2"> ˌ ◌ </Th> </Tr>

What are the functions of stress in english language