lozenge vs cachou

lozenge and cachou both are nouns.

Word	Noun	Adjective	Verb	Adverb
lozenge	Yes	No	No	No
cachou	Yes	No	No	No

As nouns, cachou is a hyponym of lozenge; that is, cachou is a word with a more specific, narrower meaning than lozenge:

lozenge: a small aromatic or medicated candy
cachou: a scented lozenge used to sweeten the breath (e.g. to conceal the odor of tobacco)

Other hyponyms of lozenge include cough drop, pastil, pastille, troche.

lozenge (noun)	cachou (noun)
a dose of medicine in the form of a small pellet	a scented lozenge used to sweeten the breath (e.g. to conceal the odor of tobacco)
a small aromatic or medicated candy