syntagm vs syntagma

syntagm and syntagma both are nouns.

Word	Noun	Adjective	Verb	Adverb
syntagm	Yes	No	No	No
syntagma	Yes	No	No	No

As nouns, syntagm and syntagma are synonyms defined as:

syntagm and syntagma: a syntactic string of words that forms a part of some larger syntactic unit

syntagm (noun)	syntagma (noun)
a syntactic string of words that forms a part of some larger syntactic unit	a syntactic string of words that forms a part of some larger syntactic unit