Can someone explain to me when to use "cuid"? I hope it's not too broad of a question. But I see "cuid", "chuid", "gcuid", etc used and apparently it's to indicate some form of a possession, such as mo cuid gruaige or "my hair". But then I've seen simply "mo chara" or "my friend without "cuid". Can someone explain to me when I should use the cuid/chuid/gcuid? go raibh mile maith agat!