This is the 13166th most frequent Polish word.
og
In Polish, "og" is not an independent word; it might be a fragment or typo.
Here, 'og' is part of the word 'ogrodzie', which means 'garden' in the locative case.
W ogrodzie rośnie piękne drzewo.
A beautiful tree is growing in the garden.
In 'ogniska', 'og' is the root word for 'ognisko', meaning 'bonfire' or 'fireplace', in genitive case here.
Przeszedł obok ogniska, czując ciepło.
He walked past the bonfire, feeling its warmth.
Here the word 'og' is part of 'ogar', which means 'hound', a specific type of dog.