What part of speech is the word learning?

The word "learning" can be either a noun or a verb, depending on its function in a sentence.

Noun: It refers to the process of gaining knowledge or skills.

* Example: Learning is a lifelong journey.

Verb: It means to acquire knowledge or skills.

* Example: He is learning to play the guitar.

To determine which part of speech "learning" is in a particular sentence, consider the context and its role in the sentence.