What have these words in common?

[Pentagon]

Can anyone see what the following words have in common?:AROMA BORING BREAD CATER FEAR SOURLY TOR WIRED

[Penny]

erm...they all have an R in them

[Xollob]

All uppercase?

[delboy3]

they all have shorter words in them? (OK Roma is a place...)

[seal!]

I'd go with the R connection

[jno]

if this is a GBQ question, the answer may be more abstruse than that... but I don't know what it is, sorry!

[Kingaroo]

Maybe they are all anagrams?  cater = trace, tor = rot, etc?