<Li> Romanian mama / mamă </Li> <Li> Russian мама (mama) In Russian papa, deda and baba mean "father", "grandfather" and "grandmother" respectively, though the last two can represent baby - talk (baba is also a slang word for "woman", and a folk word for a married woman with a child born). In popular speech tata and tyatya for "dad" were also used until the 20th century . </Li> <Li> Serbian мама / mama </Li> <Li> Sinhalese, the word for mother originally was "mawa" ("meniyande") and father was "piya" ("piyanande"). Use of "amma" for mother and "thaththaa" for father is due to influence of other languages . In some areas of Sri Lanka, particularly in the Central Province, Sinhalese use the word "appachchi" for father . </Li>

Where do the names mom and dad come from