leaf, lief

Leaf or leaf means one of the growing parts of a tree, shrub, or plant, now turning orange, red, and yellow--
She tried to preserve the pretty leaf by pressing it between sheets of waxed paper.
She drew a fall scene and colored each leaf with a different crayon.
Leaf may also mean a thin sheet of metal--
The statue was covered in gold leaf.
Leaf may mean one sheet of paper from a book, with or without printing on it--
He tore a leaf from the book to write a note.
Leaf may also be used figuratively--
He promised to turn over a new leaf, and to behave better in the future.

Lief or lief ( rhymes with leaf  ) means willingly or gladly--
I'd as lief walk home as ride with a drunk driver.
She would as lief stay home as go on vacation, most years.

Now that you know that, you can say--
"He would as lief go outside to admire each colorful leaf as go to a party or football game."

Note--"leaves" may be the plural ( more than one ) of "leaf"--
The leaves are starting to change color.
"Leaves" may also be the third person singular ( he, she, it ) form of "leave", meaning to depart or go away--
She leaves for work every morning at nine.
Note #v 2--a "leaflet" is a small brochure or pamphlet--
They distributed a leaflet to announce the opening of their new business.
A "leaflet" may also be a small leaf, just beginning to grow from a branch or stem--
She checked the little plant every day, to see if it had made a new leaflet yet.