Oncorhynchus tshawytscha, commonly known as Chinook salmon, is a highly prized fish species that is native to the Pacific Northwest region of North America. The name "Chinook" is a North American Indian word that means "chief" or "king", reflecting the importance of this species in the region's ecosystems and cultures. While "Chinook salmon" is the most common name for this species, there are also several other synonyms that are used in different contexts. These include king salmon, tyee salmon, spring salmon, and blackmouth salmon. Each of these names reflects the unique qualities and characteristics of this iconic fish species, and underscores its value to both people and the natural environment.