section vs unit

section and unit both are nouns.

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

section (noun)	unit (noun)
the cutting of or into body tissues or organs (especially by a surgeon as part of an operation)	an assemblage of parts that is regarded as a single entity
one of several parts or pieces that fit with others to constitute a whole object	a single undivided whole
one of the portions into which something is regarded as divided and which together constitute a whole	an organization regarded as part of a larger social group
a self-contained part of a larger composition (written or musical)	a single undivided natural thing occurring in the composition of something else
a segment of a citrus fruit	any division of quantity accepted as a standard of measurement or exchange
a small army unit usually having a special function	an individual or group or structure or other entity regarded as a structural or functional constituent of a whole
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

section (verb)	unit (verb)
divide into segments