Gap
Part of speech: verb
Definition: To notch, as a sword or knife. To make an opening in; to breach. To check the size of a gap.
Part of speech: noun
Definition: An opening in anything made by breaking or parting An opening allowing passage or entrance An opening that implies a breach or defect A vacant space or time A hiatus. A mountain or hill pass. a sheltered area of coast between two cliffs (mostly restricted to place names). The regions between the outfielders.
Example sentence: What art is, in reality, is this missing link, not the links which exist. It's not what you see that is art; art is the gap.
Col
Part of speech: noun
Definition: A dip between mountain peaks in a summit-line.