lethal dose vs dose

lethal dose and dose both are nouns.

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

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

Other hypernyms of lethal dose include dosage.

lethal dose (noun)	dose (noun)
the size dose that will cause death	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

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