The right word is one that means exactly what you want to say and has the level of formality which is appropriate for your reader and your purposes. Writing is more interesting if you use specific words rather than general words.
General words can describe or apply to anything.
They do not paint an accurate or dynamic picture. The movie was really neat. The movie had realistic, frightening, and fun special effects. We had a lot of good food. Abstract words refer to concepts, ideas that cannot be discerned by the five senses.