I understand that some radicals have the same meaning as the kanji e.g. 水 = Water, 火 = fire, 山 = mountain, 川　= river etc. So in my limited understanding, these actually mean ‘something’. However, looking at the list of radicals, there are lot which are just given names like pot lid, spiky stick, top of head etc. My question is, do these ‘shapes’ mean anything as well? Or are they just there to help memorise stroke order by breaking more complicated kanji down into smaller chunks?