Difference between Thickening and Deepening

Thickening

Part of speech: verb

Definition: To make thicker (in the sense of wider).

Part of speech: noun

Definition: the process of making something, or becoming, thick or viscous a substance, usually a source of starch, used to thicken a sauce a thickened part of a structure

Deepening

Part of speech: verb

Definition: To make deep or deeper

Example sentence: Elaine Equi has been publishing her observant, often playful poetry for some 30 years, extending and deepening the range of her intrinsically wry voice.