archesporium vs archespore

archesporium and archespore both are nouns.

Word	Noun	Adjective	Verb	Adverb
archesporium	Yes	No	No	No
archespore	Yes	No	No	No

As nouns, archesporium and archespore are synonyms defined as:

archesporium and archespore: primitive cell or group of cells from which a mother cell develops

archesporium (noun)	archespore (noun)
primitive cell or group of cells from which a mother cell develops	primitive cell or group of cells from which a mother cell develops