
Beef consommé is a clear, clarified beef broth; beef bouillon is the related savory simmered liquid.
Every stand-in brings too much salt, so the seasoning has to be recalculated rather than repeated. Taste the base before you salt anything else in the glass.
Beef broth and stock
Unclarified, cloudier and usually less concentrated; in a clear drink the cloudiness shows, and in a Bloody Mary nobody can tell.
Bouillon cube
Dehydrated and reconstituted, dominated by salt and often carrying its own seasoning, and treat it as a different ingredient and cut the salt everywhere else.
Refrigerated and used within a couple of days, or frozen in portions. It is a fresh stock with nothing preserving it, and it goes off quietly rather than obviously.