FOAM is a playable word

foam Scrabble® Dictionary

verb
foamed, foaming, foams
to form foam (a light, bubbly, gas and liquid mass)
(adjective) foamable
11 Playable Words can be made from "FOAM"
   2-Letter Words (6 found)
   3-Letter Words (4 found)
   4-Letter Words (1 found)