Et cetera is abbreviated to etc. No second period is needed but you will sometimes find one anyway.
An additional period is not necessary at the end of a sentence that ends in the word "inc."
No you do not
No one period is sufficient.
Phrase is a word ended with a period but not completely a sentence while sentence has a complete thought. It begins with capital letter and ends with a punctuation mark or period.
If a sentence ends with an abbreviated word then only one period (full stop) is used.
No. You can never have two periods at the end of a sentence. "He will arrive at 6 P.M."
This question has no merit.
Headache starts and ends with the letters he. Another word is heartache.
A SENTENCE WITH THE WORD OUNCE A SENTENCE WITH THE WORD OUNCE A SENTENCE WITH THE WORD OUNCE A SENTENCE WITH THE WORD OUNCE
x is the word. x vs. x (whatever else you put, or another period to end the sentence.)
It is likely you are referring to an abbreviation.
A word that ends with 'ible' and means that can be eaten is edible.