Brain Work

Do you ever write a word and then ralise you're not quite sure of the meaning and whether it's appropriate;  so you look it up and find it's perfect, and you needn't have worried?  I do that all the time.  Yesterday it was the word 'bijou', which turned out to mean 'small and elegant', absolutely right for the expensive little shops I was trying to describe. 

I must have this store of words in my subconscious that I've forgotten, but they pop up when they're needed. Isn't the human brain an amazingly wonderful thing?