Quality
First let us look at the word "quality" on its own
According to Webster, quality is
- A peculiar and essential character (nature)
- An inherent feature (property)
- Degree of excellence (grade)
- Superiority in kind (relative worth)
Each of these represent the common understanding
- Like so many words in the English language
- The meaning is ambivalent
In project management, we need to be more specific