Word Unit: plag-, plagu-, plague- (Greek > Latin: strike, stroke, blow, wound; beat the chest; lament loudly [while beating the chest]; pestilence)
Word Unit: plagi-, plagio- + (Greek: sideways, slanting, sloping; oblique)
Word Unit: plagiar- (Latin: a literary thief; "plunderer, oppressor, kidnapper" [one who "abducts the child or slave of another"]; then by extension, to take and use the thoughts, writings, etc. of someone else and represent or claim them as one's own)
Word Unit: Plagiarisms: Past and Present (plagiarize comes from Latin plagium which meant "kidnapping")
Word Unit: Planets in motion (passively drifting and wandering in the sky)

A cross reference of word units that are related, directly or indirectly, to the: "moon": Calendar, Moon Facts; Chemical Element: selenium; Gods and Goddesses; luna, luni-; Luna, the earth moon; menisc-; meno-; plano-; seleno-.

Word Unit: plankto-, plankt-, -plankton (Greek: passively drifting, wandering, or roaming)

Inter-related cross references, directly or indirectly, involving the "sea" and the "ocean" bodies of water: abysso- (bottomless); Atlantic; batho-, bathy- (depth); bentho- (deep, depth); halio-, halo- (salt or "the sea"); mare, mari- (sea); necto-, nekto- (swimming); oceano-; pelago- (sea, ocean); thalasso- (sea, ocean).

Word Unit: Plankton Varieties (importance of plankton in marine life)
Word Unit: plano-, plan-, plani- (Latin: flat, even, level, smooth)
Word Unit: plano-, plan-, -plany, -plania (Greek: passively drifting, wandering, or roaming; planet or planets)

A cross reference of word units that are related, directly or indirectly, to the: "moon": Calendar, Moon Facts; Chemical Element: selenium; Gods and Goddesses; luna, luni-; Luna, the earth moon; menisc-; meno-; Planets in Motion; seleno-.

Word Unit: planta-, plant- (Latin: sole of the foot; to tread down with the sole or the flat bottom or the underside of the foot; and by extension, to level the ground for sowing seeds)

Related "foot, feet" units: melo-; ped-; podo-; -pus.

Word Unit: plasmo-, plasm-, plast- plasma-, plasmato-, -plasmat-, -plasia, -plasis, -plasm, -plasmatic, -plasmic, -plast, -plastic, -plasy, -plasty (Greek: made, molded, formed)
Word Unit: platy-, plat-, platino-, platt- (Greek: broad, wide; flat, level)
Word Unit: plaud-, plaus-, plod-, plos- (Latin: to clap, to strike, to beat; to clap the hands in approbation [recognition as good], to approve)
Word Unit: ple-, pleini-, plen-, plet- (Latin: fill, full)

Inter-related cross references, directly or indirectly, involving word units meaning "more, plentiful, fullness, excessive, over flowing": copi-; exuber-; hyper-; multi-; opulen-; pleio-; plethor-; poly-; super-; total-; ultra-; undu-.

Word Unit: pleb- + (Latin: common people, common multitude; as opposed to the patricians [upper-class citizens] of Roman times)
Word Unit: plectr- + (Greek plektron > Latin plectrum: thing to strike with; such as, a pick for a lyre, a zither, a guitar, an autoharp, etc.)
Word Unit: -plegia, -pleg, -plegic, -plegy, plego-, pleg- (Greek: stroke, blow, strike; paralysis)
Word Unit: pleio-, plei-, pleo-, pleon-, plio- (Greek: more, most; full; excessive; multiple)

Inter-related cross references, directly or indirectly, involving word units meaning "more, plentiful, fullness, excessive, over flowing": copi-; exuber-; hyper-; multi-; opulen-; ple-; plethor-; poly-; super-; total-; ultra-; undu-.

Word Unit: pleo-, plos-, ploto-, plot-, pluteus- + (Greek: swim, swimming, swimmer; sail, sailor; float, floating)

Word families with similar applications about: "swim, swimming": nata-; necto-; neusto.

Word Unit: Pleonasms or Tautological Redundancies (avoid redundancies or excessive repetitiousness by not using unnecessary repetitions and superfluous words or more word usages than is needed, desired, or required)