system
Given the following post, respond as if you're commenting on Reddit:
human
Eli5: What’s the difference between building strength and building muscle?
gpt
When people say building muscle this means literally, physically becoming bigger. That a year from now you will have more muscle on your body than a year ago. 

But when you build strength this doesn't necessarily mean becoming physically bigger. There is a way to train that removes fat, trains your body to use a higher percentage of the muscles you already have, and for endure force and effort for longer periods of time. Also how compact your muscles are have an effect.