repository vs. secretary

recorder vs. registrar

robe vs. vest

reefer vs. stick

rabato vs. rebato

rabbet vs. rebate

racetrack vs. track

racecourse vs. track

raceway vs. track

race vs. raceway

race vs. subspecies

race vs. wash

race vs. speed

reflection vs. reflexion

radiotelegraph vs. radiotelegraphy

radiophone vs. radiotelephone

radiotelephone vs. radiotelephony

rear vs. tail

ranch vs. spread

raft vs. sight

receiver vs. recipient

rafter vs. raftsman

rafter vs. raftman

range vs. stove

range vs. straddle

railroad vs. sandbag

rapier vs. tuck

radar vs. radiolocation

rachet vs. ratchet

ratch vs. ratchet

raincoat vs. waterproof

ratlin vs. ratline

rake vs. scan

ratan vs. rattan

reducer vs. reductant

radiogram vs. radiograph

radiogram vs. shadowgraph

radiogram vs. skiagraph

radiogram vs. skiagram

ramekin vs. ramequin

refill vs. replenish

ramp vs. storm

radiophoto vs. radiophotograph

reflection vs. reflectivity

rifle vs. strip

retainer vs. servant

rigging vs. tackle

reticle vs. reticule

recap vs. retread

retread vs. rework

recap vs. recapitulate

ripsaw vs. splitsaw

revere vs. revers

revere vs. worship

remake vs. remaking

redo vs. remake

refashion vs. remake

revetement vs. revetment

rivet vs. stud

room vs. way

riveter vs. rivetter

rep vs. repp

recidivist vs. repeater

riband vs. ribband

repertoire vs. repertory

ribbon vs. thread

rickrack vs. ricrac

riddle vs. screen

reservoir vs. source

ridge vs. ridgepole

ridge vs. rooftree

ridge vs. ridgeline

rocket vs. skyrocket

rocket vs. roquette

readjust vs. reset

rudderpost vs. rudderstock

rue vs. sorrow

regret vs. rue

rue vs. ruefulness

repent vs. rue

rule vs. ruler

ruler vs. swayer

rundle vs. spoke

rundle vs. rung

runway vs. track

radius vs. spoke

rooms vs. suite

rails vs. track

ropeway vs. tram

roadside vs. wayside

railyard vs. yard

restlessness vs. uneasiness

restiveness vs. skittishness

restrictiveness vs. unpermissiveness

rigor vs. severity

rigor vs. rigour

rigor vs. validity

rigour vs. severity

rigorousness vs. severity

rigourousness vs. severity

readiness vs. zeal

readiness vs. set

receptiveness vs. receptivity

reserve vs. uncommunicativeness

reserve vs. substitute

reserve vs. stockpile

reticence vs. uncommunicativeness

reflectiveness vs. reflectivity

reflectance vs. reflectivity

rashness vs. recklessness

recommendation vs. testimonial

rigidity vs. rigidness

ruggedness vs. toughness

rankness vs. richness

repulsiveness vs. wickedness

randomness vs. stochasticity

reality vs. world

realism vs. reality

reality vs. realness

reasonableness vs. tenability

reasonableness vs. tenableness

rationality vs. reasonableness

reason vs. reasonableness

ricketiness vs. unsteadiness

rationality vs. rationalness

rectitude vs. uprightness

refinement vs. shade

rapaciousness vs. voraciousness

religionism vs. religiosity

religiosity vs. religiousism

resolve vs. settle

resolve vs. solve

rabidity vs. rabidness

reputability vs. respectability

ruralism vs. rurality

ruralism vs. rusticism

ropiness vs. tackiness

recency vs. recentness

refractoriness vs. unmanageableness

recalcitrance vs. refractoriness

recalcitrancy vs. refractoriness

robustness vs. validity

retentiveness vs. retentivity

radiance vs. radiancy

radiance vs. shine

radiance vs. refulgence

radiance vs. refulgency

rosiness vs. ruddiness

resonance vs. reverberance

resonance vs. ringing

resonance vs. sonorousness

resonance vs. sonority

resonance vs. vibrancy

rapport vs. resonance

rotundity vs. roundness

rolypoliness vs. tubbiness

resilience vs. resiliency

repercussion vs. reverberation

refractiveness vs. refractivity

rain vs. rainfall

rain vs. rainwater

rate vs. value

rotundity vs. sphericity

rotundness vs. sphericity

remove vs. transfer

remove vs. settle

remove vs. take

remove vs. withdraw

romance vs. romanticism

resource vs. resourcefulness

remains vs. stiff

realm vs. region

ratability vs. rateability

reactivity vs. responsiveness

root vs. stem

root vs. solution

root vs. settle

root vs. rout

root vs. rootle

raphe vs. rhaphe

reason vs. understanding

reliance vs. trust

reverie vs. revery

reek vs. stink

reek vs. smell

relish vs. zest

relish vs. savor

relish vs. savour

recollection vs. remembrance

rage vs. storm

reject vs. scorn

reject vs. spurn

refuse vs. reject

reject vs. resist

rubric vs. title

regime vs. regimen

rawness vs. tenderness

report vs. reputation

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