Lety's play a game!

Sorry - didn’t catch the four letter word requirement - how about

TUBA > LYNN

instead

I think “bose” might be a little iffy.

Merriam-Webster lists it only as a person’s name, and i’m not sure whether such proper names qualify.

tuba
tuna
tune
tone
lone
lyne
lynn
dame > gent

BUSH --> GORE

Another way:
BUSH
Bust
Lust
Lost
Lose
Lore
Gore

I’m stuck on TUBA -> LYNN
So far, I’ve gotten:
TUBA
Tube
Tune
Tone
Lone
?
LYNN

DAME
Lame
Lane
Land
Lend
Lent
GENT

Fish -> Bird

Long
Song
Sing
Sine
Line
Linn
Lynn

Okay, I know some people with the last name Linn.

Fish
Fist
Mist
Must
Bust

Bird

Dang, I can’t do that one either. Apparently it can only be done via evolution, but you need “amphibian” and “dinosaur” on the way through.

Fish - wish - wash - bash - base - bare - bard - bird
Drum --> Beat

fish
fist
pist
piss
pass
bass
bars
bard
bird
foot > yard

drum
dram
drat
brat
beat

foot > food > ford > cord > card > yard

COWS --> BEEF

FOOT
food
ford
cord
card
YARD

COLD → BOIL

rjk, you rat fink.

cold > bold > boll > boil

SODA --> CANS

:stuck_out_tongue:

Rat-finked you again!

FOOT -> fort -> ford -> fard -> YARD

Soda
Coda
Cods
Cads
Cans

Girl --> Lady

Bugger.

Bonus…

Cows
Bows
Bots
Bets
Bees
Beef

GIRL
gill
rill
rile
ride
wide
wade
lade
LADY

LOTS --> NONE