Which word does the below Plexor means ?

You see me once in June, twice in November, and not at all in May. What am I?

What is the longest word in the dictionary?

Can you decipher the following common phrase?

T M C
A U O
H S M
W T E

I am a type of word that is spelt incorrectly or used differently, on purpose for humour. What am I?
Hint 1: You can find me in a joke.
Hint 2: I am a play on words.

Can you count the number of seconds in a year?

Clue: You need to bother about calculation.

If,
29 - 1 = 30
9 - 1 = 10
14 - 1 = 15

Based on similar logic, Can you prove that the below algebraic equation is true?
11 - 1 = 10 ?

By including only four matchsticks in below picture, you have to make "Four Triangles And Two Squares"

I am first found in caves, now prolific online; I am a depiction, a drawing, a symbol, or sign. I will convey whichever mood you could wish; or for that matter, a fist, flask, or fish. What am I?

I sleep during the day and fly at night, but I have no feathers to aid my flight. What am I?