alluvial deposit vs sediment

alluvial deposit and sediment both are nouns.

Word	Noun	Adjective	Verb	Adverb
alluvial deposit	Yes	No	No	No
sediment	Yes	No	Yes	No

As nouns, sediment is a hypernym of alluvial deposit; that is, sediment is a word with a broader meaning than alluvial deposit:

alluvial deposit: clay or silt or gravel carried by rushing streams and deposited where the stream slows down
sediment: matter that has been deposited by some natural process

Other hypernyms of alluvial deposit include deposit.

alluvial deposit (noun)	sediment (noun)
clay or silt or gravel carried by rushing streams and deposited where the stream slows down	matter that has been deposited by some natural process

alluvial deposit (verb)	sediment (verb)
	settle as sediment
	deposit as a sediment