The difference between Extreme and Final

When used as nouns, extreme means the greatest or utmost point, degree or condition, whereas final means a final examination.

When used as adjectives, extreme means of a place, the most remote, farthest or outermost, whereas final means last.

Extreme is also adverb with the meaning: extremely.

check bellow for the other definitions of Extreme and Final

Extreme as an adjective:

Of a place, the most remote, farthest or outermost.

Examples:

"At the extreme edges, the coating is very thin."
Extreme as an adjective:

In the greatest or highest degree; intense.

Examples:

"He has an extreme aversion to needles, and avoids visiting the doctor."
Extreme as an adjective:

Excessive, or far beyond the norm.

Examples:

"His extreme love of model trains showed in the rails that criscrossed his entire home."
Extreme as an adjective:

Drastic, or of great severity.

Examples:

"I think the new laws are extreme, but many believe them necessary for national security."
Extreme as an adjective:

Of sports, difficult or dangerous; performed in a hazardous environment.

Examples:

"Television has begun to reflect the growing popularity of extreme sports such as bungee jumping and skateboarding."
Extreme as an adjective (archaic):

Ultimate, final or last.

Examples:

"the extreme hour of life"

Extreme as a noun:

The greatest or utmost point, degree or condition.
Extreme as a noun:

Each of the things at opposite ends of a range or scale.

Examples:

"'extremes of temperature"
Extreme as a noun:

A drastic expedient.
Extreme as a noun (mathematics):

Either of the two numbers at the ends of a proportion, as 1 and 6 in 1:2=3:6.

Final as a noun (North America):

A final examination; a test or examination given at the end of a term or class; the test that concludes a class.
Final as a noun (sports):

The last round, game or match in a contest, after which the winner is determined.
Final as a noun:

A contest that narrows a field of contestants to ranked positions, usually in numbered places (1st place/prize, 2nd place/prize, etc.) or a winner and numbered runners-up (1st runner-up, etc.).
Final as a noun (phonology):

The final part of a syllable, the combination of medial and rime in phonetics and phonology.
Final as a noun (music):

The tonic or keynote of a Gregorian mode, and hence the final note of any conventional melody played in that mode.

Final as an adjective:

Last; ultimate.

Examples:

"'final solution; the final day of a school term"
Final as an adjective:

Conclusive; decisive.

Examples:

"a final judgment; the battle of Waterloo brought the contest to a final issue"
Final as an adjective:

Respecting an end or object to be gained; respecting the purpose or ultimate end in view.
Final as an adjective (grammar):

Expressing purpose; as in the term final clause.
Final as an adjective (linguistics):

Word-final, occurring at the end of a word.