tip over vs turtle

tip over is not a noun while turtle is a noun.

Word	Noun	Adjective	Verb	Adverb
tip over	No	No	Yes	No
turtle	Yes	No	Yes	No

As verbs, turtle is a hyponym of tip over; that is, turtle is a word with a more specific, narrower meaning than tip over:

Other hyponyms of tip over include capsize, turn turtle, upend.

tip over (noun)	turtle (noun)
	any of various aquatic and land reptiles having a bony shell and flipper-like limbs for swimming
	a sweater or jersey with a high close-fitting collar

tip over (verb)	turtle (verb)
turn from an upright or normal position	hunt for turtles, especially as an occupation
cause to overturn from an upright or normal position	overturn accidentally