luxuriant
Headache starts and ends with the letters he. Another word is heartache.
The subject of a parable about the kingdom's value in which the word is five letters and it ends with the letter l is small.
Another word for a brass-like alloy that is 6 letters and ends in "en" is "latten."
The word, "trauma" seems to fit.
Wit
Aga
Eagles
township
A word that begins and ends with the letters he: headache. heartache.
The word you are looking for is "important."
rampage
vent