Biretta
"Cap" in Latin can also be synonymous with "head" or "top."
Peak.
Biretta
Another word for a cap with a tassel is "mortarboard." This term is commonly used to refer to the square academic cap worn during graduation ceremonies. It features a flat top and is often associated with academic achievements.
knee cap
Knitted cap, but that's two words!
Icecap would be an example of a compound word containing the word cap.
une casquette
The word "cap" has 3 phonemes: /k/ /æ/ /p/.
First, bullets and missles are completely different. Projectile is the word you are looking for.
Top if cap to bottle and hat if a head cap
Mind Cerebrum Intellect Thinking cap Gray matter Noggin Noodle