is there something about the irish, that we know this (first cousin, second cousins and removed ..)?

i learned these relationships as a child (but then, one of my father's first cousins was grandmother to kids my age--they were my second cousins, once removed, i was a first cousin once removed to their grandmother)

thanks though for the names..

(curiosly, this is something my parent knew in gaelic, (but they were not/are not speakers, and knew only a very little that they had learned in school--which meant mostly prayers and curse words--though when we encounted a word, my mother knew the phonics, and remembered some of the grammer) since they had to think, and translate the relationships into english)