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.