Yes. No question.
With top-roping, the belayer can be spacing-out quite a bit and still do their job with a minimum of risk. With one hand on the belay tool, and another sensing the tension of the rope to the climber, you feel when there is some slack, then haul it in without even thinking. If the climber falls, it's rare the fall with be more than a foot or two.
On the other hand, the lead belayer has to be paying much more attention to what the climber is doing. Instead of hauling in the slack as in top-roping, in lead the rope is paid out as the climber ascends.
If the climber suddenly lunges upwards in top roping, faster than the belayer can haul it in, it's no big deal, there will be a little slack, and if they fall, they'll fall to about where they were before lunging, hardly cause for concern. Since the rope is paid out in lead, the belayer has to anticipate how much rope the climber will need. As a result, lead belayers maintain a fair amount of slack in the line. Few things are as demoralizing as making a complicated move while climbing, only to get yanked down because you've run out of slack and the belayer is slow to pay out. This especially can happen when the climber is trying to clip in, where the excess rope is the greatest, and therefore one of the most dangerous times to fall.
When a lead climber falls while climbing, they'll fall whatever the distance to the last anchor is, plus the slack. If the climber falls while struggling to clip in, they'll fall double the distance down to the last anchor. On many routes than can be several feet, equating to a drop of 6 feet or more, before the rope begins to tension. When it does, that can easily yank the belayer up off the ground, and the belayer must be anticipating it or they're going to be having a bad time. I've been climbing with a friend where he slipped while clipping in, and I was suddenly about 4 or 5 feet off the ground hanging off the wall by the time the two of us came to rest. That would not have gone well had I not been paying attention.
So as I am belaying, I must be watching what my partner is doing. When he is climbing, I keep the slack as low as I can without impeding his progress, and when he is ready I pay out more so he can bring the rope up to clip in, anticipate any trouble, then when he is successfully clipped in, haul in a bit of the slack in preparation for him to resume climbing. I have to be careful how much slack he has, as if I have too much near the bottom of the route for example, he could hit the deck, or me, before the rope even tensions. In outdoor climbing locations, varied terrain may present that hazard along the route, and in those situations I must communicate and coordinate the slack/speed relationship with the climber through those portions of the route. In top roping, I barely have to do any of that.
Additionally, as he is climbing, I must keep an eye on every time he clips in, to make sure he does it properly. When fatigued from a difficult climb, it could be easy to clip in backwards, for example. If a clip-in isn't done properly and he falls, the anchor could release, which obviously can be very dangerous. In top toping, I don't even have to look up at all while my partner is climbing.
Ropes are rated for a particular amount of falls at or above a given fall factor, after which the rope must be retired as it is no longer safe. If climbing exclusively top-roping, you will basically never approach a fall factor high enough to even bother thinking about whether it crossed the safety threshold. When lead climbing, that can happen on any route.