• 展開てんかい — development; unfolding; deployment
• 展示てんじ — display; exhibition
• 発展はってん — growth; advancement
• 展望てんぼう — outlook; perspective
• 進展しんてん — progress; advancement
• 展覧てんらん — exhibition
• 展性てんせい — ductility; malleability

展 commonly appears in compounds about progress, layout, and vision—business strategy, artistic displays, or tactical deployment.

Its core sense is “spreading out,” whether across space (exhibits, panoramas) or time (development, advancement).

展覧会てんらんかいが 来週らいしゅうから 始はじまります。
The exhibition will begin next week.

計画けいかくを 展開てんかいする 時期じきです。
It's time to put the plan into action.