Primary succession refers to the process of ecological succession in a new, previously uninhabited environment. As the environment evolves, certain key terms come into play. The most commonly used synonyms for primary succession include pioneer species, colonization, and establishment. Pioneer species are the first organisms to move into an uninhabited environment and start the process of colonization. Colonization refers to the act of organisms establishing themselves in a new location, while establishment refers to the process of settling into a new environment and becoming the dominant species. Other important terms related to primary succession include facilitation, competition, and climax community, all of which play important roles in the process of ecological succession.