divide vs dissever

divide is a noun but dissever is not a noun.

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

As verbs, divide and dissever are synonyms defined as:

Other synonyms of divide include carve up, separate, split, split up.

divide (noun)	dissever (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)	dissever (verb)
perform a division	separate into parts or portions
move or break apart
force, take, or pull apart
make a division or separation
separate into parts or portions
act as a barrier between; stand between