It's more a matter of usage for names... Shore is not typically used as a name and doesn't really sound very namey... Migiwa has been used by a number of people and has more of a name feel... It's not SUPER common, but it's around... Kind of like just calling someone
Bee (spelt this way) would seem strange in En., but we would have no problem calling someone
Deborah or
Melissa even though the meaning is exactly the same. I've never met anyone named Friend (though have heard of some named
Bud, though I wouldn't use it), but
Ruth and
Dakota are accepted as real names. They have more of a name feel than
Bee or Friend do.