ˈlo.kus, [ˈɫ̪ɔkʊs̠], nominative plural

1. place, spot (a specific location) aliquem in alicuius locum substituere ― to put someone in place of another

2. a passage of literature

3. in the plural with neuter gender: a region or general geographic area

The concept of locus or loci in Rhetoric (the Greek word topos or topoi is also used interchangeably) is the idea of using categories to highlight relationships between ideas or arguments. The same Latin and Greek words are also used to refer to the concept of ” commonplace books ” or “commonplaces”, which is a collection of sometimes-related ideas, quotes, letters, poems, and other such anecdotal datum.