You seem to be four words short.
oh OK, sorry! Let me fix that.
Brain, Soul, Cat, Slow, Fast, Prison, Whole, Airplane. That should give it away
Words that go with “food”?
yes!!
Wasn’t sure because I’d never heard of slow food.
Have since Googled it.
mmm
Armpit
Gangrene
Morphine
Popemobile
Saliva
Saturated Fat
Starfish
Touch
Are they all derived from bastardized Old French?
Sorry, I know this was tough.
They are actual names of bands.
mmm
Haha OK, yeah that was tough.
How about this one:
Batman
Van
Tire
Bra
Poo
Rust
March
Pool
Forget this one. I made a single error that breaks the puzzle.
It was supposed to be towns in Europe, but there is no Pool, only a Poole.
Ah! I’ve been to Rust, it is the German home town of a rather excellent theme park.
I wouldn’t have got the link though.
I haven’t been to any of them, but I have drunk champagne on a yacht and been to me. 
bugger! that’s going to be in my head for the rest of the day!
I have one set, but I don’t expect it to be unsolved for long:
thirsty
undefeated
monopoly
crabcake
sturdy
hijacker
calmness
weighing
They all contain a ‘consecutive pair’ of letters, e.g. IJ in hijack.
My list:
affixes
antiquities
backhand
checkup
cozily
hammock
jackals
quiff
I don’t know if this is it but do they all have an emphasis on the first syllable?
That wasn’t quite it. They have three alphabetically consecutive letters in a row: as “hij” in hijack.
Ah, yes of course. Once I spotted the HI in ‘thirsty’ I didn’t bother checking any further.