Step 1: Understanding the Concept:
This question requires an understanding of the distinction between criminal trespass, house-trespass, and the aggravated form, house-breaking, as defined under the Indian Penal Code. House-breaking is not a separate offense but a specific manner of committing house-trespass.
Step 2: Detailed Explanation:
Let's analyze the offenses in sequence:
1. Criminal Trespass (S. 441 IPC): Entering property in the possession of another with criminal intent. Raman's entry into Raju's house constitutes criminal trespass.
2. House-Trespass (S. 442 IPC): Committing criminal trespass by entering a building used as a human dwelling. Since Raju's house is a dwelling, Raman has committed house-trespass.
3. House-Breaking (S. 445 IPC): This section states that a person commits "house-breaking" if he commits house-trespass by entering the house in any of six specified ways. The sixth way described in Section 445 is: "If he enters or quits by opening any lock in order to the committing of the house-trespass, or in order to the quitting of the house after a house-trespass."
In the given scenario, Raman entered Raju's house by "opening the door with that key." A key is used to open a lock. By using the key to open the lock and enter, Raman's act of house-trespass falls under the specific aggravated form described in the sixth clause of Section 445.
Therefore, while Raman has committed house-trespass, the specific manner of his entry elevates the offense to house-breaking. When a more specific and aggravated offense is committed, it should be identified as such.