Retention | of

OF
abbr. f.trade.	orange flake
abbr. oil	ocean freight; oceanographic facility; oil-fired; open fracture
abbr. textile	olefin fiber; ooze finish; open fabric; open flame; Oxidationsfarbstoff

| Critical

critical
abbr. polym.	crit.

| Knowledge

Knowledge
abbr.	K

- only individual words found