Ella cantaría.

Ella canta.

Ella cantará.

Ella cantía.

what one *would* do under the right circumstances

what one *will* do some day

what one may or may not be doing at any given moment

what one did yesterday

The imperfect tense keeps the infinitive and the conditional does not. This makes two different conjugations.

The conditional tense keeps the infinitive and the imperfect does not. This makes two different conjugations.

They are conjugated the same and you use the context of the sentence to tell the difference.

They don't have the same endings. This statement is false.