rill

noun 0.834

rill erosion

noun 0.697

rivulet

noun 0.631

ruelle

noun 0.617

ringlet

noun 0.607

runnel

noun 0.595

riffling

noun 0.592

sulcus

noun 0.590

riffle

noun 0.587

rim

noun 0.584

rifling

noun 0.579

sill

noun 0.576

fissure

noun 0.574

rift valley

noun 0.569

furrow

noun 0.567

ruffle

noun 0.563

riva

noun 0.561

rial

noun 0.561

rive

noun 0.561

rima

noun 0.559

rind

noun 0.558

wrinkle

noun 0.558

ridge

noun 0.553

frill

noun 0.548

groove

noun 0.546

gully

noun 0.544

trill

noun 0.543

riel

noun 0.543

coulee

noun 0.542

rike

noun 0.540

rippling

noun 0.540

frilling

noun 0.540

rhine

noun 0.538

rift

noun 0.537

riff

noun 0.537

rite

noun 0.536

roulade

noun 0.536

ridging

noun 0.535

rankle

noun 0.534

rictus

noun 0.532

crinkle

noun 0.531

river

noun 0.531

reek

noun 0.531

riddle

noun 0.530

riddim

noun 0.529

rine

noun 0.528

raggle

noun 0.526

ritz

noun 0.525

rin

noun 0.523

raita

noun 0.523

ringwork

noun 0.521

rolly

noun 0.521

rime

noun 0.520

rit

noun 0.519

kile

noun 0.518

ruff

noun 0.518

veinlet

noun 0.517

rondelle

noun 0.515

rondel

noun 0.515

stria

noun 0.514

ravelin

noun 0.514

rathole

noun 0.513

crevice

noun 0.513

gullet

noun 0.512

raddle

noun 0.511

rorqual

noun 0.511

ripple

noun 0.510

rail

noun 0.510

rickrack

noun 0.509

rattle

noun 0.508

rumple

noun 0.507

slit

noun 0.507

trench

noun 0.507

vein

noun 0.506

rutter

noun 0.506

rib

noun 0.506

crater

noun 0.505

cringle

noun 0.505

ripple carry

noun 0.505

drumlin

noun 0.504

ring

noun 0.504

raceway

noun 0.503

riddling

noun 0.503

rere

noun 0.503

ridgeline

noun 0.502

lacune

noun 0.501

kringle

noun 0.501

prill

noun 0.501

griddle

noun 0.500

rum

noun 0.500