necking vs snogging

necking and snogging both are nouns.

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

As nouns, snogging is a hyponym of necking; that is, snogging is a word with a more specific, narrower meaning than necking:

necking: affectionate play (or foreplay without contact with the genital organs)
snogging: (British informal) cuddle and kiss

necking (noun)	snogging (noun)
affectionate play (or foreplay without contact with the genital organs)	(British informal) cuddle and kiss
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