yeah. What she (Denise)^^^^ said. Those are not bushings. After those rubber covers split, dirt and water gets into the joint easier and starts to wear away the metal parts. Then they get looser and looser and looser until one of them comes apart while you're navigating a trail on the edge of a cliff or a busy 10-lane highway at 80mph during rush hour and suddenly you're on the evening news. Your new parts will probably come with grease fittings so you can periodically grease them to keep dirt and water out and make the parts last longer.
Plus, picture #4 looks like the end of a steering stabilizer. It's a shock absorber used to dampen steering feedback. You might be able to get new bushings for that. But it might be easier to replace the whole thing if you think it needs it. It's usually an optional, nice-to-have piece of equipment.