Какое отличие между hold (держать) и keep (держать)?

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“Holding” is just the action of carrying something. You hold your phone, you hold someone’s hand.

“Keep” has a few definitions, but the one you’re probably thinking about is more related to “retaining”, making sure it’s safe. I’ll give examples so you can see the difference

“Can you hold this for me quickly? I just need to use the bathroom”

“My mom gave me this necklace when I was 5, I’ve kept it with me ever since”

Another definition is basically taking ownership of something.

“Here’s my old phone. You can keep (have) it, I don’t need it anymore”

Or when you go to a restaurant and you wake to give a tip. For example, the bill is $16. You give them a $20 bill. You can say “keep the change”.

One more definition, to continue doing something

“I know playing piano is hard, but keep trying, and you’ll succeed”

“For some reason, I keep dropping my phone. I’ve fixed my screen 3 times this month”