nelson vs wrestling hold

nelson and wrestling hold both are nouns.

Word	Noun	Adjective	Verb	Adverb
nelson	Yes	No	No	No
wrestling hold	Yes	No	No	No

As nouns, wrestling hold is a hypernym of nelson; that is, wrestling hold is a word with a broader meaning than nelson:

nelson: any of several wrestling holds in which an arm is passed under the opponent's arm from behind and the hand exerts pressure on the back of the neck
wrestling hold: a hold used in the sport of wrestling

nelson (noun)	wrestling hold (noun)
any of several wrestling holds in which an arm is passed under the opponent's arm from behind and the hand exerts pressure on the back of the neck	a hold used in the sport of wrestling