ice tongs vs pair of tongs

ice tongs and pair of tongs both are nouns.

Word	Noun	Adjective	Verb	Adverb
ice tongs	Yes	No	No	No
pair of tongs	Yes	No	No	No

As nouns, pair of tongs is a hypernym of ice tongs; that is, pair of tongs is a word with a broader meaning than ice tongs:

ice tongs: tongs for lifting blocks of ice
pair of tongs: any of various devices for taking hold of objects; usually have two hinged legs with handles above and pointed hooks below

Other hypernyms of ice tongs include tongs.

ice tongs (noun)	pair of tongs (noun)
tongs for lifting blocks of ice	any of various devices for taking hold of objects; usually have two hinged legs with handles above and pointed hooks below