unit vs section

unit and section both are nouns.

Word	Noun	Adjective	Verb	Adverb
unit	Yes	No	No	No
section	Yes	No	Yes	No

unit (noun)	section (noun)
an assemblage of parts that is regarded as a single entity	the cutting of or into body tissues or organs (especially by a surgeon as part of an operation)
a single undivided whole	one of several parts or pieces that fit with others to constitute a whole object
an organization regarded as part of a larger social group	one of the portions into which something is regarded as divided and which together constitute a whole
a single undivided natural thing occurring in the composition of something else	a self-contained part of a larger composition (written or musical)
any division of quantity accepted as a standard of measurement or exchange	a segment of a citrus fruit
an individual or group or structure or other entity regarded as a structural or functional constituent of a whole	a small army unit usually having a special function
	a division of an orchestra containing all instruments of the same class
	a small team of policemen working as part of a police platoon
	a specialized division of a large organization
	a small class of students who are part of a larger course but are taught separately
	(geometry) the area created by a plane cutting through a solid
	a distinct region or subdivision of a territorial or political area or community or group of people
	a very thin slice (of tissue or mineral or other substance) for examination under a microscope
	a land unit equal to 1 square mile

unit (verb)	section (verb)
	divide into segments