"Words coined in the 1860s" . "Psychiatric false diagnosis" . "Patterns" . "Structure" . "Hierarchy" . "Words coined in the 1990s" . "Neologisms" . "Love" . "LGBT studies" . "Feminist terminology" . "Political culture" . "Social justice terminology" . "Interpersonal relationships" . "Interpersonal attraction" . "Homosexuality" . "Same-sex sexuality" . "Sexual orientation" .