Bear Up --Or Bear Down

A curious word is BEAR, just like the animal whose name it BEARS: We BEAR UP under pressure, yet we also BEAR DOWN Should a dog BARE its teeth, it's much worse than a frown The right to BARE arms---not the right to BEAR arms? And if you just BEAR WITH me, my dear, you'll come to no harm Meanwhile, this little ditty BEARS OUT my contention that I CAN'T BEAR TO GO ON now, not even a sec-- --end