What is the act of entering another's property without permission and is often considered burglary?

The act of entering another's property without permission is most accurately described as trespassing. Trespassing involves being on someone else's property without their consent, and while it can lead to further criminal activities, such as burglary, it is fundamentally distinct from those actions.

"Break and Enter" specifically refers to the act of illegally entering a property, often with the intent to commit a crime. It involves both breaking an entry point and entering the premises without consent, which aligns closely with the description provided in the question. It's important to note that while breaking and entering can be related to burglary, not all trespassing or unauthorized entries are considered burglary unless there’s intent to commit an offense like theft inside.

Robbery and theft refer to taking someone's property with the intent to permanently deprive them of it, often involving direct confrontation (in the case of robbery) or simply taking possession without permission (as with theft). These actions do not primarily focus on the unauthorized entry aspect, which is why they do not fit the definition precisely in this context.

In summary, while "Break and Enter" captures the illegal entry part of the question, the general concept of entering without permission is more accurately defined as trespassing by itself.