Nostalgia is triggered by something reminding an individual of an event or item from their past. ... The term of "feeling nostalgic" is more commonly used to describe pleasurable emotions associated with and/or a longing to go back to a particular period of time, although the former may also be true.

Is it correct to say feeling nostalgic?

'Nostalgia' is the feeling; 'nostalgic is the adjective to refer to something that produces that feeling.

Is feeling nostalgia an emotion?

Nostalgia, a sentimental longing for the past, is a common, universal, and highly social emotional experience.