If a hole doesn't get bigger or reveal anything that you prefer to keep hidden or interfere with the fashion statement you intend to make then it seems to me that it isn't a problem and doesn't need a remedy.

Depending on the knit or weave of the fabric some holes tend to grow and grow (by rip or run) so one may prefer to seal (stop the increase in size of the opening) or mend (close the opening).

A snag is a knit stitch pulled out of its normal length which can look ratty and be the result of (among other things) a drag across an uneven surface, but if the fibers are not broken through, it will not result in a hole and it will not run.

Lycra is really really stretchy, so when a little bit gets grabbed it can snag out of the normal format without breaking. It can get scraped without a rip or a hole.

Does that help the confusion?

I've been listening to Handel's Messiah today, so I'm humming "And all flesh shall see it together" but I'm thinking of the flesh that wasn't really meant to be seen.