Hmm, it helps my thinking sometimes to go through it all again, even if it means repeating things that either you or I already typed I hope you can bear with that.
Currently we have:
Throne (3): Castle, Bow, Litter
Geography (4): Washington, Himalayas, School, Turkey
Vet (3): Turkey, Nurse, Litter
of course, two words are repeated so we're still one word shy. So either:
a) Jimmmmm wasn't thinking those exact clues and our missing word is from one of those, OR
b) the last word has no clue for it, meaning random choice
a) by definition, is less risky, so sure, one of:
Line, Life, Trip, or bottle, maybe even microscope
I do think we likely got all the geography, and that maybe little wasn't meant for either throne or vet. But I'm leaning towards it being the one for Throne, because why Throne? Why not just king or royalty if the third word we're line. Litter is the one that specifically refers to the chair-like aspect of throne. Which makes me think the missing word goes better with vet.
Of life, bottle, and microscope, I'm leaning more towards life.
Thoughts on my revised logic?