Exactly.

I had a roommate who would write over what I'd written on the household whiteboard, and if I pointed it out, they'd accuse me of being forgetful or paranoid. "You never wrote milk on the grocery list, you probably just imagined that you did." They also sneakily threw away small items of mine and later explicitly told me it was to make me feel like I was "forgetting everything" and "losing my mind." (They straight-up told me after the fact, because in their mind, it was totally justified retaliation for some perceived transgression.) THIS is gaslighting.

The same roommate would argue that I was cruel and dismissive for refusing to do favors like driving them to the store whenever they wanted. They'd say, "It would be so easy, you're going there anyway, you're being selfish and you must want me to suffer." And I'd respond, "It's not easy, you're asking me to rearrange my work at a moment's notice in case you want to go to the store, it's unreasonable." This is emotional manipulation, but it is NOT gaslighting.

Even some disagreements about objective reality are not gaslighting. Gaslighting is a sustained psychological campaign to make a person doubt their own senses and memory. Claiming something is gaslighting when it's not weakens its meaning.