time lag vs moratorium

time lag and moratorium both are nouns.

Word	Noun	Adjective	Verb	Adverb
time lag	Yes	No	No	No
moratorium	Yes	No	No	No

As nouns, moratorium is a hyponym of time lag; that is, moratorium is a word with a more specific, narrower meaning than time lag:

time lag: time during which some action is awaited
moratorium: a legally authorized postponement before some obligation must be discharged

Other hyponyms of time lag include extension, retardation.

time lag (noun)	moratorium (noun)
time during which some action is awaited	suspension of an ongoing activity
	a legally authorized postponement before some obligation must be discharged