turtle vs overturn

turtle and overturn both are nouns.

Word	Noun	Adjective	Verb	Adverb
turtle	Yes	No	Yes	No
overturn	Yes	No	Yes	No

As verbs, overturn is a hypernym of turtle; that is, overturn is a word with a broader meaning than turtle:

Other hypernyms of turtle include tip over, tump over, turn over.

turtle (noun)	overturn (noun)
any of various aquatic and land reptiles having a bony shell and flipper-like limbs for swimming	the act of upsetting something
a sweater or jersey with a high close-fitting collar	an improbable and unexpected victory

turtle (verb)	overturn (verb)
hunt for turtles, especially as an occupation	change radically
overturn accidentally	rule against
	cancel officially
	turn from an upright or normal position
	cause to overturn from an upright or normal position
	cause the downfall of; of rulers