This is the 3519th most frequent Polish word.
żyła
"Żyła" means "vein" in English.
In this sentence, 'żyła' is the past tense, third person singular form of the verb 'żyć', meaning 'to live'.
Ona żyła w pięknym mieście przez wiele lat.
She lived in a beautiful town for many years.
Here, 'żyła' is a noun meaning 'vein', referring to a blood vessel in the body.
Poprzez skórę widoczna była żyła.
A vein was visible through the skin.
In this example, 'żyła' as a noun means 'vein' but in the context of a deposit of minerals.