Diversity: Diversity refers to all the ways in which people differ, and it encompasses all the different characteristics that make one individual or group different from another. It is all-inclusive and recognizes everyone and every group as part of the diversity that should be valued. A broad definition includes not only race, ethnicity, and gender — the groups that most often come to mind when the term "diversity" is used, but also age, national origin, religion, disability, sexual orientation, socioeconomic status, education, marital status, language, and physical appearance.
Inclusion: appreciating and using our unique differences – strengths, talents, weaknesses and frailties – in a way that shows respect for the individual and ultimately creates a dynamic multi-dimensional organization.
Inclusive design: Taking into account differences among individuals and groups when designing something, to avoid creating barriers. Inclusive design can apply to systems, facilities, programs, policies, services, education, etc.
Diversity Resource Center. Diversity and Social Justice Glossary. University of Washington.
Ontario Human Rights Commission. Glossary of human rights terms.