Which is 'more formal'. ' a nearby river' 'nearby' is an adjective here

It depends on the the sentence. 1. There's a river nearby. (nearby = adverb of place) 2. There's a nearby river. (nearby = adjective) #1 is more colloquial. (Nothing to do with formality) Similar adverbs to nearby: there, here, over there,... The river over there. The river over here. The river nearby.

マニっち、ありがとう！＾＾

What Cherry said. :)