fir

noun 0.633

fern

noun 0.615

ferning

noun 0.598

firman

noun 0.581

silver fir

noun 0.564

snowfield

noun 0.556

finner

noun 0.551

firm

noun 0.549

fur

noun 0.548

frost

noun 0.543

firth

noun 0.541

fen

noun 0.537

black frost

noun 0.535

foehn

noun 0.534

firmer

noun 0.532

furring

noun 0.532

balsam fir

noun 0.532

finer

noun 0.529

ice fog

noun 0.526

hoar

noun 0.525

conifer

noun 0.524

moraine

noun 0.524

forest

noun 0.524

permafrost

noun 0.522

rime

noun 0.520

pinery

noun 0.519

firer

noun 0.519

frosted

noun 0.519

ice core

noun 0.519

snow

noun 0.518

icefall

noun 0.518

furan

noun 0.517

foin

noun 0.514

hoarfrost

noun 0.514

fon

noun 0.514

pine

noun 0.514

tundra

noun 0.513

fermium

noun 0.511

underfur

noun 0.510

furze

noun 0.509

neve

noun 0.509

ground ice

noun 0.507

fernery

noun 0.507

fynbos

noun 0.506

pruina

noun 0.506

snowdrift

noun 0.505

fimbrin

noun 0.505

brin

noun 0.503

culm

noun 0.503

fibrin

noun 0.502

fino

noun 0.501

glacier

noun 0.501