sexual climax vs orgasm

sexual climax and orgasm both are nouns.

Word	Noun	Adjective	Verb	Adverb
sexual climax	Yes	No	No	No
orgasm	Yes	No	No	No

As nouns, sexual climax and orgasm are synonyms defined as:

sexual climax and orgasm: the moment of most intense pleasure in sexual intercourse

Other synonyms of sexual climax include climax, coming.

sexual climax (noun)	orgasm (noun)
the moment of most intense pleasure in sexual intercourse	the moment of most intense pleasure in sexual intercourse