megadose vs dose

megadose and dose both are nouns.

Word	Noun	Adjective	Verb	Adverb
megadose	Yes	No	No	No
dose	Yes	No	Yes	No

As nouns, dose is a hypernym of megadose; that is, dose is a word with a broader meaning than megadose:

Other hypernyms of megadose include dosage.

megadose (noun)	dose (noun)
an exceptionally large dose, as of a drug or vitamin.	a measured portion of medicine taken at any one time
	street name for lysergic acid diethylamide
	the quantity of an active agent (substance or radiation) taken in or absorbed at any one time
	a communicable infection transmitted by sexual intercourse or genital contact

megadose (verb)	dose (verb)
	administer a drug to
	treat with an agent; add (an agent) to