The Word "train" is both a verb and a noun.
The noun train is a singular, common noun which can be a concrete noun or an abstract noun, depending on use.
- a vehicle that runs on a track (concrete)
- a line of people, animals, or traffic moving together (concrete)
- the back of a long dress that spreads over the ground (concrete)
- a series of thoughts or events (abstract)
Example sentences:
- "I am using answers.com while riding a train".
- " I've lost my train of thought."
