abuse, agony, annoy, anvil, arrow, avoid, awake, asset, arome, armor, apron, antic, angel, amuse, among, alure, alter, alien, ...
Well, there's alot of words that have 5 letters and start with A. :P
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Some five letter nouns that start with A are:alarmangelangleankleanvilapple,apronaspicasterazure
ClaspCreamCheapCleatCouldCasteCrimpChoseClone
Lungs.
kitty
carry
apple
Beans
Organ
A five letter word that starts with 'tha' is THANK.
Queer is a five letter word.
ebony