left a list of related proposals here describe defloration accepted

Virginity stands for those male (mostly) or female without experience in any sexual intercourse. While Defloration it's about taking away that virginity from female characters through vaginal penetration. So for the site use, you could have [Virginity] and [No penetration] in a doujin, but with [Defloration] and [No penetration] could only be using it in quite, ultra specific plot in the works.

They do not describe the same thing. Defloration is specifically for female virginity, while the virginity tag is more use with males. If you're unsatisfied with that it you could check here rename virginity → male virgin +41, but merging them is completely inappropriate.