They are one in the same
There are a number of folks much more experienced than you are who maintain they are different.
https://www.muscleandfitness.com/workouts/workout-tips/bodybuilding-vs-weightlifting-go-heavy/By Arnold Schwarzenegger
"One thing many bodybuilders don’t realize is that success in the gym is all about weight training rather than weightlifting. That is, the goal is not to see how much weight you can lift, but to use resistance training to develop, shape and sculpt the various muscles of the body. When you do this kind of training you also get stronger, but that’s not the primary goal."
https://www.bodybuilding.com/fun/kosloff8.htmRon Kosloff
April 23, 2019
"A bodybuilder sculpts to have every muscle stand out and a weightlifter endeavours to have a large ego as well as large muscles. Which category do you want to fit into?"
https://www.powerdot.com/blogs/training/powerlifting-vs-bodybuilding "Powerlifting training aims to increase maximal strength, especially in movements such as the squat, bench press, and deadlift. Bodybuilding training is less concerned with how much weight is lifted but aims to maximize muscle hypertrophy (growth) as much as possible."
https://www.verywellfit.com/bodybuilding-powerlifting-and-weightlifting-3498670By Paul Rogers
Updated on December 16, 2020
Medically reviewed by Erin Pereira, PT, DPT
"Bodybuilders use a wider range of exercises, including free and machine weights than any other discipline because they need to develop even smaller muscles to enhance body features. It’s fair to say that bodybuilders concentrate more on muscle size and body features than on actual strength."
"Powerlifters compete in competitions to see who can lift the heaviest weights in only three exercises:
The bench press — pushing a barbell upward while lying on a bench.
The deadlift — lifting a barbell from the floor.
The squat — squatting down, with thighs parallel to the ground with a barbell on the shoulders."
https://thedietauthority.com/strength-training-vs-bodybuilding/"Even though to the naked eye, it might seem like both are relatively the same, they are incredibly different. Also, although both require a lot of discipline, motivation, and time, bodybuilding is a whole other arena that you will have to dedicate your life to.
The main difference between bodybuilding and strength training is that one is for solely increasing the size of your muscles. The other is meant to improve your overall strength and won’t show as much bulk. With bodybuilding, it’s all about the size of your body, while strength training focuses primarily on making you stronger."
Brian Shaw - famous American strongman

Gerry Garcia NPC over 40 heavyweight champion
