This is the 13615th most frequent Polish word.
plażami
"Plażami" means "beaches" (instrumental case) in Polish.
Here, 'plażami' is the instrumental plural form of 'plaża', used after a preposition to indicate the means or accompaniment.
Często spacerujemy po plażami letnimi.
We often walk along the summer beaches.
In this sentence, 'plażami' serves as the instrumental plural form of 'plaża', highlighting the tool or medium of inspiration.
Zainspirowana plażami, namalowała piękny obraz.
Inspired by the beaches, she painted a beautiful picture.
Here, 'plażami' is used in an instrumental case implied context to show a relationship of position or notion.