Kernel swap

Are kernels interchangeable?

Meaning If I had an admin updating kernels for me, and I had lesser than production servers, but still wanted them secure, can I just take the kernel file (whatever/wherever) it may exist, copy it, and plug it in to another identical server?

Making sure grub.conf listed it first.....

Similar to how if I wanted to swap out say a custom Horde webmail cofig.blah with a default Horde config.blah

???

Am I dumb?

Kernel swap

 

 

 

 

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