What type of noun is "alarm" in this sentence?His sense of alarm grew as he picked up the mouldy piece of fruit from the bottom of his school bag.

In the sentence "His sense of alarm grew as he picked up the mouldy piece of fruit from the bottom of his school bag," the word "alarm" functions as a common noun.

Explanation:

1. Common Noun: A common noun refers to general items or concepts rather than specific names. In this case, "alarm" is not referring to a specific alarm system or device but rather to a feeling or state of anxiety or concern.

2. Contextual Use: The phrase "sense of alarm" indicates that it is describing an emotion or reaction to a situation (the discovery of mouldy fruit), reinforcing that "alarm" is being used in a general sense.

Overall, "alarm" in this context embodies the emotional response rather than a proper name or specific entity, which defines it as a common noun.