Mat 16:9 Do you not yet understand, nor remember the five loaves of the five thousand, and how many baskets you took up?
Mat 16:10 Neither the seven loaves of the four thousand, and how many baskets you took up?

Again, the subject is bread, Christ's symbol for the physical body and physical world. Christ here points out that physical needs are taken care of by God. The apostles saw proof of this with their own eyes.

"Understand" is from noeô, which means "to perceive with the eyes," "to perceive with the mind," and "to observe."

"Remember" is from mnêmoneuô, which means to "call to mind," "to remember," and "to think of."

"Loaves" is from artos, the same word translated as "bread."

"Took up" if from lambanô, which in the previous verse was translated as "brought" but which means "to take," "to seize," "to catch," "to apprehend with the senses."