The “center” and “center” have the same meaning, which refers to the middle of something. Both the center and center can be a noun, adjective, or a verb.
The only difference between the two is how they sleep. Center is commonly regarded as an American spelling. However, in Britain, people tend to spell it as the center. This is also the case in some words such as meter and meter, color, and color.
In conclusion, the center is the American way of spelling, whereas the center is the British way of spelling. I hope you find this information useful.