A principle of behaviour, conduct etc. thought to be desirable or necessary, especially as formally expressed by a government or other authoritative body.
The fact of finding pleasant or interesting things by chance.
An idea suggested as an explanation that needs to be tested.
The subjects studied in a school or course.
The ability to understand how someone else feels.
Track your progress, practice with flashcards, and earn XP.
A very small difference in meaning or feeling.
Continued effort despite difficulties.