An interference or intrusion.
An encroachment beyond proper limits.
Relative importance.
A bulge: something that bulges out or is protuberant or projects from a form.
The state of being prominent: widely known or eminent.
Autonomous height; relative height or prime factor; a concept used in the categorization of hills and mountains.
A gaseous projection, often loop-shaped, springing from the surface of the Sun or a star.