This is the 16320th most frequent Russian word.
резиновая
"Rezinoвая" means "rubber" or "made of rubber" in English.
In this sentence, 'резиновая' is used as an adjective describing the duck, indicating the material it is made of, which is rubber.
У меня есть резиновая уточка для ванны.
I have a rubber duck for the bath.
Here, 'резиновые' (plural form) describes the boots, specifying their material and highlighting their practicality for outdoor use.
Мы купили резиновые сапоги для похода.
We bought rubber boots for the hike.
In this example, 'резиновая' characterizes the band, referring to its functionality and elastic material that allows it to hold hair effectively.