javelin vs spear

javelin and spear both are nouns.

Word	Noun	Adjective	Verb	Adverb
javelin	Yes	No	No	No
spear	Yes	No	Yes	No

As nouns, spear is a hypernym of javelin; that is, spear is a word with a broader meaning than javelin:

Other hypernyms of javelin include lance, shaft, sports equipment.

javelin (noun)	spear (noun)
a spear thrown as a weapon or in competitive field events	a long pointed rod used as a tool or weapon
an athletic competition in which a javelin is thrown as far as possible	an implement with a shaft and barbed point used for catching fish

javelin (verb)	spear (verb)
	pierce with a spear
	thrust up like a spear