Mastodon vs. Mammut: What's the Difference?

Any of several very large, extinct proboscidian mammals of the family Mammutidae of the Miocene, Pliocene, and Pleistocene Epochs, resembling elephants but having molar teeth of a different structure.

Extinct type genus of the Mammutidae: mastodons

Extinct elephant-like mammal of the genus †Mammut that flourished worldwide from Miocene through Pleistocene times; differs from elephants and mammoths in the form of the molar teeth.

(figurative) Anything big or clunky.

An extinct genus of mammals closely allied to the elephant, but having less complex molar teeth, and often a pair of lower, as well as upper, tusks, which are incisor teeth. The species were mostly larger than elephants, and their remains occur in nearly all parts of the world in deposits ranging from Miocene to late Quaternary time.

Extinct elephant-like mammal that flourished worldwide from Miocene through Pleistocene times; differ from mammoths in the form of the molar teeth