Why is ouster the act of ousting and not one who ousts?

Why is ouster the act of ousting and not one who ousts? ouster pronunciation +Oyster Improve your English pronunciation with our short tutorials Explore vowel and ouster studio The meaning of ouster in bengali is বেদখল What is ouster in bengali? See pronunciation, translation, synonyms, examples, definitions of ouster in

ouster studio ouster-le-main, n meanings, etymology, pronunciation and more in the Oxford English Dictionary

ouster sdk The pronunciation of oyster in French - une huître ouster came over with the Conqueror , the s was pronounced , as it still is in words like host But in French dialects it became mute during the twelfth