necking vs fondling

necking and fondling both are nouns.

Word	Noun	Adjective	Verb	Adverb
necking	Yes	No	No	No
fondling	Yes	No	No	No

As nouns, necking and fondling are synonyms defined as:

necking and fondling: affectionate play (or foreplay without contact with the genital organs)

Other synonyms of necking include caressing, cuddling, hugging, kissing, petting, smooching, snuggling.

necking (noun)	fondling (noun)
affectionate play (or foreplay without contact with the genital organs)	affectionate play (or foreplay without contact with the genital organs)
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