linchpin vs lynchpin

linchpin and lynchpin both are nouns.

Word	Noun	Adjective	Verb	Adverb
linchpin	Yes	No	No	No
lynchpin	Yes	No	No	No

As nouns, linchpin and lynchpin are synonyms defined as:

linchpin and lynchpin: pin inserted through an axletree to hold a wheel on

As nouns, linchpin and lynchpin are synonyms defined as:

linchpin and lynchpin: a central cohesive source of support and stability

Other synonyms of linchpin include anchor, backbone, keystone, mainstay.

linchpin (noun)	lynchpin (noun)
pin inserted through an axletree to hold a wheel on	pin inserted through an axletree to hold a wheel on
a central cohesive source of support and stability	a central cohesive source of support and stability