The library is far. The library is far away. I was told that far and far away are both fine and express the same meaning in the above sentences. But, I was told that only far away can be used ...
grammar - Difference between "far" and "far away" - English Language ...
Far and far away technically have pretty much exactly the same meaning; however, because far away has two words instead of one, it generally has a bit stronger feeling to it (this is true in general: The more words you add to a term or phrase, the stronger the impression), and thus is usually used to describe longer distances. Far away can also sometimes have the implication of "out of reach ...
word usage - Use of 'Far' and 'Far away.' - English Language Learners ...
In most cases they should be pretty interchangeable grammatically, but do mean slightly different things. "Far" is a description of the distance travelled, when the end point doesn't really matter. "Far away" refers more directly to the final location. If I am explaining how hard I threw a ball I might say "I threw the ball really far" If, on the other hand, I am describing where the ball ...
"Far away" presumes you are speaking relative to your present location. Of course, if you say "far from here ", in in certain contexts that could mean the same as "far away" - for example, if you were speaking face-to-face with someone, your present location is the same, so ultimately the meaning of both statements is the same.