An interface is something that a person would use to do the things they need

To interact with something is to engage with an activity/conversation/person.

For example, if I was to talk with someone, I'm interacting with them, because I'm doing an action that engages that person

"Interface" typically refers to the way in which two or more systems, devices, or pieces of software connect and communicate with each other. It can also refer to the point at which two or more things meet and interact, or to a user interface, which is the part of a software program that a person interacts with. For example, you might say "I'm having trouble interfacing my laptop and my printer."

On the other hand, "interact" refers to the action of communicating or exchanging information between two or more things. It implies a more active, reciprocal exchange between the participants. For example, you might say "The students were asked to interact with each other to build their communication skills."

So in summary, "interface" refers to the means of connecting and communicating, while "interact" refers to the actual act of communication or exchange of information.

> An interface is something that a person would use to do the things they need

That is one use but I think OP is talking about "interface" being used as a verb

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Yes, but that’s for people.

Interact can have a more general meaning of two things affecting each other. Alcohol can interact with your medication, etc.

Interact as a verb is more common.

Interface as a verb feels more corporate. I hear it a bit at work, but not common when talking about communicating with friends and family.

They mean the same thing, they're synonyms.

Interface

verb

1. interact with (another system, person, organization, etc.).

"his goal is to get people interfacing with each other"

But there are multiple definitions for interface so it can also be a noun. Interact only has one definition.

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