lag vs sky

lag and sky both are nouns.

Word	Noun	Adjective	Verb	Adverb
lag	Yes	No	Yes	No
sky	Yes	No	Yes	No

As verbs, sky is a hypernym of lag; that is, sky is a word with a broader meaning than lag:

Other hypernyms of lag include flip, pitch, toss.

lag (noun)	sky (noun)
the act of slowing down or falling behind	the atmosphere and outer space as viewed from the earth
one of several thin slats of wood forming the sides of a barrel or bucket
the time between one event, process, or period and another

lag (verb)	sky (verb)
throw or pitch at a mark, as with coins	throw or toss with a light motion
cover with lagging to prevent heat loss
hang (back) or fall (behind) in movement, progress, development, etc.
lock up or confine, in or as in a jail