liaison vs amour

liaison and amour both are nouns.

Word	Noun	Adjective	Verb	Adverb
liaison	Yes	No	No	No
amour	Yes	No	No	No

As nouns, liaison and amour are synonyms defined as:

Other synonyms of liaison include affair, affaire, intimacy, involvement.

liaison (noun)	amour (noun)
a channel for communication between groups	a usually secretive or illicit sexual relationship
a usually secretive or illicit sexual relationship