insect repellant vs insectifuge

insect repellant and insectifuge both are nouns.

Word	Noun	Adjective	Verb	Adverb
insect repellant	Yes	No	No	No
insectifuge	Yes	No	No	No

As nouns, insect repellant and insectifuge are synonyms defined as:

insect repellant and insectifuge: a chemical substance that repels insects

Other synonyms of insect repellant include insect repellent.

insect repellant (noun)	insectifuge (noun)
a chemical substance that repels insects	a chemical substance that repels insects