stack vs stacker

stack and stacker both are nouns.

Word	Noun	Adjective	Verb	Adverb
stack	Yes	No	Yes	No
stacker	Yes	No	No	No

stack (noun)	stacker (noun)
a large tall chimney through which combustion gases and smoke can be evacuated	a laborer who builds up a stack or pile
a storage device that handles data so that the next item to be retrieved is the item most recently stored (LIFO)
a list in which the next item to be removed is the item most recently stored (LIFO)
an orderly pile
(often followed by `of') a large number or amount or extent

stack (verb)	stacker (verb)
arrange in stacks
load or cover with stacks
arrange the order of so as to increase one's winning chances