making love vs lovemaking

making love and lovemaking both are nouns.

Word	Noun	Adjective	Verb	Adverb
making love	Yes	No	No	No
lovemaking	Yes	No	No	No

As nouns, making love and lovemaking are synonyms defined as:

making love and lovemaking: sexual activities (often including sexual intercourse) between two people

Other synonyms of making love include love, love life, sexual love.

making love (noun)	lovemaking (noun)
sexual activities (often including sexual intercourse) between two people	sexual activities (often including sexual intercourse) between two people