The abs and core are different word. The core is muscles, abs, hips, lower back, glutes. This can make your body posture amazing and prevent injuries, improve stamina and remove back pain too.
Here are the best workouts for overall body improved and also no belly fat.
These are simple 3 workouts. Just need 5 min for each and repeat them twice.
The first is Skyscraper. Make 10 each side. The second is Windshield Wipers, also 10 each side. The third is Army Crawls, here make 36 steps.