This is the 9896th most frequent Spanish word.
bobada
Nonsense or triviality.
Here, 'bobada' is used to refer to something trivial or insignificant, displaying its usage as a noun to describe an inconsequential matter.
No te preocupes por esa bobada, no es importante.
Don't worry about that nonsense, it's not important.
In this sentence, 'bobadas' refers to silly or senseless statements, showing how it can describe trivial comments or jokes.
Siempre dices bobadas cuando estás nervioso.
You always say nonsense when you're nervous.
Here, 'bobada' is used to express that something is perceived as silly or not worthwhile, applying it as a subjective judgement of value.