Final answer:
The noun 'songs' in the given sentence is an example of a common noun as it refers to a general, non-specific category of objects.
Step-by-step explanation:
In the sentence 'To make the time pass on our road trip, we sang our favorite songs,' the underlined word 'songs' is a common noun. A common noun refers to a general, non-specific category of people, places, objects, or ideas. This differentiates itself from proper nouns, which refer to specific names and titles. We did not use proper nouns or special compound nouns. It is also not a collective noun, which refers to a group or collection of similar things or people.
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