What part of speech is “perspective”

a perspective is a way of looking at or thinking about something, such as a particular point of view or attitude. It can also refer to the digital or optical representation of an object, such as from a particular angle or distance.

1. My perspective on life has changed drastically since I moved abroad.

2. From this perspective, we can get a better view of the city skyline.

3. Different perspectives on global warming help us to understand the phenomenon from different angles.

It is important to keep in mind that the noun form of perspective should not be confused with the verb perspective, which means 'to view from a specific point of view'.