The Similarities of White Lily & Daffodil

These two plants have many similarities, yet they look very different. I have both of them in my front yard. The Lily was taken from my mom's garden. She has a few growing on the side of her house, but they are all very small. For some reason, she has been converting the entire side to river rocks instead, and the Lilies are slowly disappearing. Perhaps she doesn't like them.

Last year, seeing that they might become extinct in her yard, I decided to take a few little tiny bulbs home to see if I can grow them. When I say tiny, they were a little smaller than a dime in actual size. They are supposed to be one of the easiest plants to grow and they multiply like weeds.
I never thought about it but looking at the two flowers now, I see some similar characteristics:
They have a calming beauty.
They don't need much maintenance.
They both start as bulbs.
They have white flower petals and yellow in the middle.
They have green stalks all the way to the flower.
Their stalk have no leaf.
They spread quickly.
Can you think of other similarities between these two flowers?

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