metamere vs somite

metamere and somite both are nouns.

Word	Noun	Adjective	Verb	Adverb
metamere	Yes	No	No	No
somite	Yes	No	No	No

As nouns, metamere and somite are synonyms defined as:

metamere and somite: one of a series of similar body segments into which some animals are divided longitudinally

metamere (noun)	somite (noun)
one of a series of similar body segments into which some animals are divided longitudinally	one of a series of similar body segments into which some animals are divided longitudinally