Check words you know to measure your vocabulary size (number of word families).
hospital
hear
problem
where
jeans
garage
frame
flood
rank
vessel
negative
landscape
console
subsidiary
thrust
humble
gram
advocacy
socket
rinse
bombard
scorn
succumb
fumble
crag
bale
detonate
grapple
metamorphose
telegram
curfew
pep
credence
retrace
adrenaline
leek
sodden
fortuitous
dingy
aural
macroscopic
fortitude
outbuilding
homily
taciturn
polypropylene
funerary
islet
wallflower
recidivist
inveterate
lipoprotein
napalm
marquetry
cypher
imperium
carotene
madcap
caudal
homolog
bacteriophage
articular
cardio
whodunit
beetroot
photoelectric
palmetto
infomercial
julep
metaphysician
therewith
campylobacter
deadbolt
condyle
munchkin
parler
gul
kickstart
lour
autogenic
poppadom
inoculum
megaparsec
abbacy
cereus
steatite
piastre
ceefax
boletus
infibulate
virilocal
daminozide
admass
yashmak
ephor
kana
durr
mahjong
glycaemic
kamala