thole vs oarlock

thole and oarlock both are nouns.

Word	Noun	Adjective	Verb	Adverb
thole	Yes	No	No	No
oarlock	Yes	No	No	No

As nouns, thole and oarlock are synonyms defined as:

thole and oarlock: a holder attached to the gunwale of a boat that holds the oar in place and acts as a fulcrum for rowing

Other synonyms of thole include peg, pin, rowlock, tholepin.

thole (noun)	oarlock (noun)
a holder attached to the gunwale of a boat that holds the oar in place and acts as a fulcrum for rowing	a holder attached to the gunwale of a boat that holds the oar in place and acts as a fulcrum for rowing