The phrase "key aspects" refers to the most important or essential parts or elements of something. It represents the crucial aspects that play a significant role or have a major impact in a particular context. Full definition
Review of key aspects of the manuscript — the narrative, vocabulary, structure, characterization, style, and development. (bookbaby.com)
Commercial mortgages and residential mortgages share certain key aspects in common. (shoprate.com)
Allowing for health and family size enables us to assess the role of parenting support and maternal education, independent of other key aspects of family circumstances likely to affect parenting. (gov.scot)