Combining Compounds: A Stupid Word Game

dave thought this was worth mentioning said
1

Seahorse
Sawhorse
See-saw
Hoarse horse

Ok, so that last one is especially stupid, but not totally nonsensical. And, of course, this is only interesting phonetically, since they're not spelled alike.

Still, can you think of any other 2 compound words that can combine all 4 ways?