What's the difference between fullage and sullage?

Fullage

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Definition:

• (n.) The money or price paid for fulling or cleansing cloth.

Example Sentences:

Sullage

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Definition:

• (n.) Drainage of filth; filth collected from the street or highway; sewage.
• (n.) That which sullies or defiles.
• (n.) The scoria on the surface of molten metal in the ladle.
• (n.) Silt; mud deposited by water.

Example Sentences:

• (1) Four weeks of control achieved in a slow moving sullage canal breeding Culex quinquefasciatus indicates that this IGR can be of use in such breeding habitats.