There is a difference between קריעה (tearing) and פרימה (unraveling): קריעה includes any place and any manner in which one tears, while פרימה is a tearing of the edge, that one tears the fringe.

And nevertheless, in a place where the direct object or the wordאותו (it) is mentioned (like ויקרע את בגדיו - and he tore his clothes, וקרע אותו - and he tore it), it is a complete tearing.

And there is a distinction between nouns that come with tearing and uprooting, whether they come alone (then its intended meaning is tearing and uprooting the object) or whether the prefix מ comes afterwards - וקרע מן (and tore from) – then it means that one tears and uproots the object from something that is attached to it.