This is the 6378th most frequent Catalan word.
oblidades
"Oblidades" means "forgotten" in English.
In this sentence, 'oblidades' (forgotten) is an adjective modifying the plural feminine noun 'llibres' (books), indicating they were not remembered.
Els llibres oblidades de la biblioteca van ser trobats.
The forgotten books of the library were found.
Here, 'oblidades' functions as an adjective describing the plural feminine noun 'eines' (tools), which were left behind or unnoticed.
Les eines oblidades al taller s'han oxidad.
The forgotten tools in the workshop have rusted.
In this scenario, 'oblidades' describes the plural feminine noun 'somnis' (dreams) as something that was neglected or overlooked.