white slave vs cocotte

white slave and cocotte both are nouns.

Word	Noun	Adjective	Verb	Adverb
white slave	Yes	No	No	No
cocotte	Yes	No	No	No

As nouns, cocotte is a hypernym of white slave; that is, cocotte is a word with a broader meaning than white slave:

white slave (noun)	cocotte (noun)
a woman sold into prostitution	a small casserole in which individual portions can be cooked and served
	a woman who engages in sexual intercourse for money