alimentation vs gavage

alimentation and gavage both are nouns.

Word	Noun	Adjective	Verb	Adverb
alimentation	Yes	No	No	No
gavage	Yes	No	No	No

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

alimentation: the act of supplying food and nourishment
gavage: feeding that consists of the delivery of a nutrient solution (as through a nasal tube) to someone who cannot or will not eat

alimentation (noun)	gavage (noun)
the act of supplying food and nourishment	feeding that consists of the delivery of a nutrient solution (as through a nasal tube) to someone who cannot or will not eat
a source of materials to nourish the body