No, they're Indo-Europeans, so they ARE the same thing.
All of us have a festival of light at this time of year, as the darkness draws in at the close of the year. The majority of the British, ethnically, are Celts, not Saxons, so they still celebrate Samhain, where bonfires are burnt and our ancestors spirits are invited to the penultimate feast of the calendar. They just don't KNOW it's that, sadly, thanks to the attempted obliteration of our culture by the enforced introduction of the Mad Daddy God of the Middle East.
The thing about Guy Fawkes is just a cover up excuse to keep an ancient "pagan" festival going. Like, erm, Christmas. And Easter.
You might want to go and look up the words "Morrigan" and "Cailleach" some time...the blue-skinned, triple-aspected, white haired hag goddess with one eye in the centre of her forehead; the goddess of winter, of war, of death and destruction.
And Mor Rigan means Great Queen in Old Irish, and oddly enough, in Sanskrit.