tump over vs turtle

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

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

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

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

tump 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

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