I know this sounds like a stupid question, but I just wanted to confirm if they are the same thing. In new canon, anti-gravity is never mentioned.
Repulsorlift technology is explicitly called out in the Star Wars: The Force Awakens: Incredible Cross-Sections as being a technology based on anti-gravity.
"Repulsorlifts allow a craft to hover or fly over a planet's surface by pushing against its gravity, producing thrust"
That being said, it would appear that the thrust doesn't have to be directly downwards towards the centre-mass. It can be used for directional thrust as well
There's also the following excerpt from the junior novelisation of Star Wars: The Empire Strikes Back
Fett was followed by a floating slab of metal that Luke couldn’t make out. The floating slab was followed by two blue-uniformed Cloud City guards, who held the end of the slab and appeared to be guiding it through the hallway. Luke realized the slab was resting on a thin repulsor sled, an antigravity device used to transport heavy objects.
No it is not anti gravity because it does not make use of anti matter, instead it uses air to push against the ground.