Acuteness
Awareness
Cleverness
Ingenuity
Intellect
Intuition
Perception
Sharpness
Smartness
"Boulevard" is a 9-letter word that means a wide street typically lined with trees.
The word you are looking for is "elucidate."
untouched
CHRONICLE
Frightful
relevance
A 9-letter word that means "can be divided by" is "divisible."
Evaporate
energetic
dexterity
reproduce
imminence, necessity