allomorph -
a variant phonological representation of a morpheme; "the final sounds of `bets' and `beds' and `horses' and `oxen' are allomorphs of the English plural morpheme"
morpheme minimal meaningful language unit; it cannot be divided into smaller meaningful units
allomorph -
any of several different crystalline forms of the same chemical compound; "calcium carbonate occurs in the allomorphs calcite and aragonite"
