Staying with nouns for now, you can enjoy a trip, a journey, and travel (no "a" with travel)
So as a noun, "travel" is a more abstract concept, whereas a trip or a journey are concrete examples of travel. "Travel" is a phrase that covers almost all examples of trips and journeys.
As verbs, You can travel (most common), you might journey, but you don't trip. Again, taking a journey or taking a trip are both examples of travelling.
So, there's a few differences to start with.
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