The difference between Drudgery and Fatigue

Drudgery as a noun:

Tedious, menial and exhausting work.

Fatigue as a noun:

A weariness caused by exertion; exhaustion.

Fatigue as a noun (often in the plural):

A menial task or tasks, especially in the military.

Fatigue as a noun (engineering):

Material failure, such as cracking or separation, caused by stress on the material.

Fatigue as a verb (transitive):

to tire or make weary by physical or mental exertion

Fatigue as a verb (transitive, culinary):

to wilt a salad by dressing or tossing it

Fatigue as a verb (intransitive):

to lose so much strength or energy that one becomes tired, weary, feeble or exhausted

Fatigue as a verb (intransitive, engineering, of a material specimen):

to undergo the process of fatigue; to fail as a result of fatigue.