Caustic is a general term for a corrosive alkali. It can be a noun or adjective.
Pumpkin is the fruit you are looking for. It contains 7 letters and begins with the letter P.
cardiac
"Sucking."
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Regalia, regatta, ricotta and rotunda are 7 letter words. They begin with r and end with a.
ammonia
No, corrosive and alkaline are not the same. Alkaline substances have a pH greater than 7, while corrosive substances can cause damage or destruction through chemical reaction. Some corrosive substances can be alkalis, but not all corrosive substances are alkaline.
Pumpkin is the fruit you are looking for. It contains 7 letters and begins with the letter P.
ditches
Tunisia
excited
Nigella
The word is ingrate.
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Analyst
slanted
hypoxia