schoolma'am vs schoolmarm

schoolma'am and schoolmarm both are nouns.

Word	Noun	Adjective	Verb	Adverb
schoolma'am	Yes	No	No	No
schoolmarm	Yes	No	No	No

As nouns, schoolma'am and schoolmarm are synonyms defined as:

schoolma'am and schoolmarm: a woman schoolteacher (especially one regarded as strict)

Other synonyms of schoolma'am include mistress, schoolmistress.

schoolma'am (noun)	schoolmarm (noun)
a woman schoolteacher (especially one regarded as strict)	a woman schoolteacher (especially one regarded as strict)