In case you aren’t already aware, Google Images has a ‘Sort by Subject’ feature on its results page – it’s the kind of left-margin item that can go easily unnoticed, but for the utility it provides, it should 80 pt. font and flashing. When you conduct a Google images search the default display (bolded and in red) is ‘All results’. The alternative view is ‘By Subject’ which breaks down your results into the most popular images associated with your search. It’s the ideal tool for those, “I can picture it, I just don’t remember what it’s called” searches.
Try it out, but more importantly keep it in mind for those moments when you really need Google to do your remembering for you.