turner vs tumbler

turner and tumbler both are nouns.

Word	Noun	Adjective	Verb	Adverb
turner	Yes	No	No	No
tumbler	Yes	No	No	No

As nouns, tumbler is a hypernym of turner; that is, tumbler is a word with a broader meaning than turner:

turner (noun)	tumbler (noun)
cooking utensil having a flat flexible part and a long handle; used for turning or serving food	pigeon that executes backward somersaults in flight or on the ground
one of two persons who swing ropes for jumpers to skip over in the game of jump rope	a glass with a flat bottom but no handle or stem; originally had a round bottom
a lathe operator	a movable obstruction in a lock that must be adjusted to a given position (as by a key) before the bolt can be thrown
a tumbler who is a member of a turnverein	a gymnast who performs rolls and somersaults and twists etc.