@literally45-- Hyaluronic acid requires glucosamine to be effective and glucosamine also increases hyaluronic acid.
So we need glucosamine for hyaluronic acid to get absorbed by the body properly. Glucosamine will also help increase our body's natural production of hyaluronic acid over the long term. So the two very much go together.
If you have to choose between hyaluronic acid vs glucosamine though, you should probably go with glucosamine.