[Dr. Jamshid Ibrahim]

Yes, Pedant of course there is justification for the existence of these general words otherwise they wouldn't exist. The examples you gave show the changes these words are subject to or have already undergone maybe because they are general. But the idea here ist: because some people are not familiar with more specific words they tend to overuse words like: nice, good, bad, happy, great...This means this way they can't express their ideas precisely and are not aware of the varying degrees of intensity of some adverbs or adjectives. This makes their texts boring.