schoolma'am vs mistress

schoolma'am and mistress both are nouns.

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

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

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

Other synonyms of schoolma'am include schoolmarm, schoolmistress.

schoolma'am (noun)	mistress (noun)
a woman schoolteacher (especially one regarded as strict)	a woman master who directs the work of others
	an adulterous woman; a woman who has an ongoing extramarital sexual relationship with a man
	a woman schoolteacher (especially one regarded as strict)