lagging vs lag

lagging and lag both are nouns.

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

lagging (noun)	lag (noun)
insulation used to wrap around pipes or boilers or laid in attics to prevent loss of heat	the act of slowing down or falling behind
	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

lagging (verb)	lag (verb)
	throw or pitch at a mark, as with coins
	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