private (nongovernmental) management

vanguard (leading units of an army) / forward (player nearest to the opposing soccer team), lineman (playing position in football), or similar positions in tennis, volleyball, and other sports

(geometry) acute angle

electric ray

stingray, specifically whiptail stingray, more specifically red stingray

stingray, specifically whiptail stingray, more specifically red stingray

electric ray

permanence; permanency

form and shadow

penumbra