Almost any English compound word that begins with "pent" means five of something (some exceptions listed below). Some examples of pent meaning five include:
Exceptions, where words beginning with pent do NOT mean five of something:
pentachord, pentacle, pentad, pentadactyl, pentagon, pentagram, pentahedron, pentamer, pentameter, pentangle, pentaploid, pentaprism, pentaquark, Pentateuch, pentathlon, pentathlete, pentatonic, pentavalent
Pentagon, pentacle, pentagram, pentathlon
HexagonHexadHexagramHexadicHexagonalAll of the above mean "six of something"HexahedronHexahedraAll of the above mean a "six sided shape"
Nativity is a well known one meaning birth.
there are not many words that start with E that mean peace but i found equanimity on synonym.com
Function is how something works; if something is working. In my own words.
Begin
adept
immense
Quatrain.
quintet quintuplet quins
Four thousand fifty-five.
malvolent
There are no synonyms for the word forever that start with the letter 'y'. Some words that the thesaurus lists as words that mean forever are; always, endlessly and permanently.