pitsaw vs whipsaw

pitsaw and whipsaw both are nouns.

Word	Noun	Adjective	Verb	Adverb
pitsaw	Yes	No	No	No
whipsaw	Yes	No	Yes	No

As nouns, whipsaw is a hypernym of pitsaw; that is, whipsaw is a word with a broader meaning than pitsaw:

pitsaw: a large two-handed saw formerly used to cut logs into planks; one man stood above the log and the other in a pit below
whipsaw: a saw with handles at both ends; intended for use by two people

Other hypernyms of pitsaw include lumberman's saw, two-handed saw, two-man saw.

pitsaw (noun)	whipsaw (noun)
a large two-handed saw formerly used to cut logs into planks; one man stood above the log and the other in a pit below	a saw with handles at both ends; intended for use by two people

pitsaw (verb)	whipsaw (verb)
	saw with a whipsaw
	victimize, especially in gambling or negotiations