Is an adjective clause the same as an adjective phrase
clause---a group of words that consists of a subject AND predicate, and usually a verb, and which may constitute a sentence or part of a sentencephrase---a small group of words forming a conceptual unit, but not a sentence, so.......
No..the clause is like a sentence and the phrase is just a couple of words.
Yes, modifies, noun, person, place, or thing
No. A clause will have its own subject and predicate; a phrase does not.