skate vs ice skate

skate and ice skate both are nouns.

Word	Noun	Adjective	Verb	Adverb
skate	Yes	No	Yes	No
ice skate	Yes	No	Yes	No

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

skate: sports equipment that is worn on the feet to enable the wearer to glide along and to be propelled by the alternate actions of the legs
ice skate: skate consisting of a boot with a steel blade fitted to the sole

Other hyponyms of skate include in-line skate, roller skate.

As verbs, ice skate is a hyponym of skate; that is, ice skate is a word with a more specific, narrower meaning than skate:

Other hyponyms of skate include figure skate, roller skate, skateboard, Rollerblade.

skate (noun)	ice skate (noun)
large edible rays having a long snout and thick tail with pectoral fins continuous with the head; swim by undulating the edges of the pectoral fins	skate consisting of a boot with a steel blade fitted to the sole
sports equipment that is worn on the feet to enable the wearer to glide along and to be propelled by the alternate actions of the legs

skate (verb)	ice skate (verb)
move along on skates	move along on ice skates