The difference between Odor and Stink

When used as nouns, odor means any smell, whether fragrant or offensive, whereas stink means a strong bad smell.

Stink is also verb with the meaning: to have a strong bad smell.

Stink is also adjective with the meaning: bad-smelling, stinky.

check bellow for the other definitions of Odor and Stink

Odor as a noun:

Any smell, whether fragrant or offensive; scent; perfume.
Odor as a noun (figuratively):

A strong, pervasive quality.
Odor as a noun (figuratively, uncountable):

Esteem; repute.

Stink as a verb (intransitive):

To have a strong bad smell.
Stink as a verb (intransitive, informal):

To be greatly inferior; to perform badly.

Examples:

"That movie stinks. I didn't even stay for the end."
Stink as a verb (intransitive):

To give an impression of dishonesty or untruth.

Examples:

"Something stinks about the politician's excuses."
Stink as a verb (transitive):

To cause to stink; to affect by a stink.

Stink as a noun:

A strong bad smell.
Stink as a noun (informal):

A complaint or objection.

Examples:

"If you don't make a stink about the problem, nothing will be done."
Stink as a noun (slang, New Zealand):

A failure or unfortunate event.

Examples:

"The concert was stink."