spear vs leister

spear and leister both are nouns.

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

As nouns, leister is a hyponym of spear; that is, leister is a word with a more specific, narrower meaning than spear:

spear: an implement with a shaft and barbed point used for catching fish
leister: a spear with three or more prongs; used for spearing fish (especially salmon)

Other hyponyms of spear include harpoon.

spear (noun)	leister (noun)
a long pointed rod used as a tool or weapon	a spear with three or more prongs; used for spearing fish (especially salmon)
an implement with a shaft and barbed point used for catching fish

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