The word 'costs' is spelt wrongly. The word 'to' is misused. Correct sentence is It costs too much to mail a letter these days.
The doctor said I have a vitamin "C" deficiency because I eat too many cookies, but I think he meant 'cookie' deficiency!
their
It is one word: "Misused".
Incorrect:What's is that time clock say?Correct: What time does the clock say?
A misused preposition occurs when a preposition is used incorrectly in a sentence. For example, saying "I will meet you in the movie" instead of "I will meet you at the movie" is a misused preposition.
Yes. All knowledge can be misused.
Misspelled or misused word, favorable.
malapropism
A SENTENCE WITH THE WORD OUNCE A SENTENCE WITH THE WORD OUNCE A SENTENCE WITH THE WORD OUNCE A SENTENCE WITH THE WORD OUNCE
The word "Wieners" is being misused in this context. It is derived from the German "Wiener Wurstchen" (Hot dog sausage).
Spell check can tell if a word is misspelled, but it cannot tell if a word is misused.