Thousands! Here are a few options:
aerobomb
aldicarb
antisnob
backcomb
backstab
catacomb
choliamb
choriamb
corncrib
divebomb
doorjamb
doorknob
firebomb
forelimb
goosegob
hecatomb
landgrab
memsahib
outclimb
outclomb
outthrob
reabsorb
ringwomb
sillabub
sillibub
spacelab
sparerib
subshrub
syllabub
timebomb
wellcurb
bathtub
bethumb
blowjob
brewpub
corncob
coulomb
cowherb
coxcomb
dislimb
disturb
flubdub
inqilab
lulibub
minicab
minilab
nashgab
overdub
pedicab
perturb
potherb
preverb
proverb
reclimb
replumb
rhubarb
sanddab
succumb
There are no two-letter English words that end with B.
Mob and minicab are words that begin with the letter m and end with b.
Thousands of English words start with the letter b. Less than ten English words end with the letter j. No Scrabble words start with b and end with j.
Climb, crumb, plumb, scrub, shrub, throb and thumb are words that end in the letter b. Absorb, adverb, prefab, suburb and superb are words that end in the letter b.
Words that start with W and end with B are washtub, web, and womb.
aplomb
buzz
bombchubclubcombcrabcribcurbdrabdumbflabflubgarbglibglobgrabgrubjamblambknobnumbscabslabslobsnobsnubstabstubswabtombwomb
Throb and thumb are 5 letter words. They begin with the letter t and end with b.
One such word is absorb.
crab, flab, grab
utueb