Love is caring, and I always try to show I care.

Caring is the gerund and is it used as a predicate noun? I was thinking it could also be a DO, but i'm not sure if it renames love?

Yes. Caring is the gerund and it is a predicate noun. It follows a linking verb and renames love.

Love = caring

Thank you Ms. Sue! My gerund homework was much easier tonight! :)

You're very welcome.

Is the homework easier -- or have you learned more? <g>

To determine whether "caring" is used as a predicate noun or a direct object, we need to analyze the sentence structure. The sentence "Love is caring, and I always try to show I care" contains a linking verb "is", which connects the subject "Love" with the predicate noun or predicate adjective that renames or describes it.

In this case, "caring" is a predicate noun as it renames the subject "Love." It is not a direct object because a direct object would receive the action of the verb. However, in this sentence, there is no action being performed on "caring"; instead, "caring" is equated with "Love." So, "caring" functions as a predicate noun, expressing a quality or characteristic attributed to "Love."