Difference between Archway and Arch

Archway

Part of speech: noun

Definition: A passageway covered by an arch, particularly one made of masonry. A doorway with a semilunar-shaped top.

Arch

Part of speech: verb

Definition: To form into an arch shape

Part of speech: adjective

Definition: knowing, clever

Part of speech: noun

Definition: An inverted U shape.An arch-shaped arrangement of trapezoidal stones, designed to redistribute downward force outward.An architectural element having the shape of an arch

Part of speech: prefix

Definition: Highly placed in a hierarchy, particularly used of church officialsPrimary among many

Example sentence: We're still living with the old paradigm of age as an arch. That's the old metaphor: You're born, you peak at midlife and decline into decrepitude.