Years ago there was a sitcom about a French girl who had come to the US, and she was questioning plurals, "If more than one mouse is mice, why is not house, hice?" I don't even remember what the show was, but I remember that line because it actually makes sense.
The other day I asked DS to clean out our mud room. Later he told his sister he had been "brooming" (i.e. sweeping with a broom). It made me wonder why we do that in this weird language of ours that makes no sense. I mean, why do we sweep with a broom instead of brooming with a broom or sweeping with a sweep?