neck vs necker

neck and necker both are nouns.

Word	Noun	Adjective	Verb	Adverb
neck	Yes	No	Yes	No
necker	Yes	No	No	No

neck (noun)	necker (noun)
an opening in a garment for the neck of the wearer; a part of the garment near the wearer's neck	a lover who necks
a narrow part of an artifact that resembles a neck in position or form
the part of an organism (human or animal) that connects the head to the rest of the body
a cut of meat from the neck of an animal
a narrow elongated projecting strip of land

neck (verb)	necker (verb)
kiss, embrace, or fondle with sexual passion