schoolma'am vs schoolmistress

schoolma'am and schoolmistress both are nouns.

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

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

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

Other synonyms of schoolma'am include mistress, schoolmarm.

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