Hinny is perfectly suited to either sex; its use is entirely dependant on the situation as are many terms of endearment. You wouldn't call your teacher hinny, but you could call a stranger at your cash register it for sure. It's a term used mainly by older people and adopted by younger people as they grow older. E.g., I never used it when I was a kid, but I do now I'm coming up 50.

There are some uncommon Geordie words from other languages -- Jugal for dog, Gadgie for man (both Romany) Charver for pal/buddy (Irish) and coin for turn (French) but Geordie is just a dialect of English and 99 per cent of its words are English.

That's not to say Geordie might not sound strange to a non-north easterner; this would make perfect sense to a Geordie:

"Get away man, mother, woman!"