Yes, ‘Pilgrim’ can be considered a proper noun when it refers to a specific group of people or individuals, particularly in historical context. For instance, when we talk about the Pilgrims who settled in Plymouth Colony in the early 17th century, we are referring to a specific group of settlers. In this case, ‘Pilgrim’ is used as a title to denote their unique identity and significance in American history.
However, in a more general sense, the word ‘pilgrim’ can also be a common noun when it refers to someone who journeys to a sacred place for religious purposes, without implying a specific historical reference. Therefore, whether ‘Pilgrim’ is a proper noun or not depends on the context in which it is used.