I don’t know
If it is a spelling error, it will underline the word in red. If it is a grammatical error, then the word will be underlined in green.
That's commonly called a bug. Even the smallest spelling error in a line of computer code can have a 'cascade' effect over the whole program.
No, it is a mechanical error.
Most likely is a grammatical error. The correct spelling does not contain the letter k at the end. The dictionary shows the correct spelling as picnic.
A sentence that has a zigzag underneath it in Word means that there is a grammatical or spelling error. The grammar error is colored in green and the spelling error in red.
The red underline indicates a spelling error, and the green underline indicates a grammatical error. Note that these programs are not infallible, and it is still up to you to decide if there was really an error.
Red, however, BLUE is for potential contextual errors, i.e., "in" to "inn".
Grammatical error
grammatical error
The grammatical error in "she wanted to know why did he leave her with any reason" is "did he leave her". It should read "why he left her".
A red underline typically indicates a spelling error, while a green underline usually signifies a grammatical error in software such as word processors or text editors.
Post-writing is what you do after you have all the ideas in your paper sorted out properly. The aim is to make your paper as clear and easy to read as possible, not necessarily correcting every grammatical error or spelling.