Exerted vs. Applied — What's the Difference?

To put to use or effect; put forth

Put into practice or to a particular use

To bring to bear; exercise

Put into practical use.

To put (oneself) to strenuous effort

Of a branch of science, serving another branch of science or engineering.

Simple past tense and past participle of exert

Simple past tense and past participle of apply

That are used;

Concerned with concrete problems or data rather than with fundamental principles; opposed to theoretical;

Put into practice or put to use;