divide vs dismember

divide is a noun but dismember is not a noun.

Word	Noun	Adjective	Verb	Adverb
divide	Yes	No	Yes	No
dismember	No	No	Yes	No

As verbs, dismember is a hyponym of divide; that is, dismember is a word with a more specific, narrower meaning than divide:

divide (noun)	dismember (noun)
a ridge of land that separates two adjacent river systems
a serious disagreement between two groups of people (typically producing tension or hostility)

divide (verb)	dismember (verb)
perform a division	separate the limbs from the body
move or break apart	divide into pieces
force, take, or pull apart
make a division or separation
separate into parts or portions
act as a barrier between; stand between