tourism industry; tourist industry
Refers to the economic sector encompassing travel, accommodation, attractions, and related services.
The tourism industry is the main source of income for this region.
観光 means 'sightseeing' or 'tourism' as an activity, while 観光産業 specifically refers to the industry or business sector.
旅行業 is the travel agency business, a subset of the broader 観光産業.
Compound of 観光 (sightseeing, tourism) and 産業 (industry).