Common Words:
* Mafia: A powerful organized crime syndicate.
* Sofa: A comfortable piece of furniture for seating.
* Wa-wa: A type of musical effect, often associated with funk music. (This is an onomatopoeic word that describes the sound produced by a wah-wah pedal)
Less Common Words:
* Alfa: A type of starch.
* Astraea: A Greek goddess.
* Mafia: (plural of "mafia")
* Palafa: A type of stilt house.
* Tonga: A type of language spoken in the Pacific Islands.
Note: It is important to remember that the "-fa" ending is not very common in English. Most words that end in "-a" are likely to be from other languages.