Pahoehoe flows tend to be relatively thin, from a few inches to a few feet thick. In map-view the flows tend to be narrow and elongate. Aa is characterized by a rough, jagged, spinose, and generally clinkery surface. Aa lava flows tend to be relatively thick compared to pahoehoe flows. Pictures in Hawaiian Tour Guide illustrate many of the points noted above.
All volcanic eruptions produce lava.
We already described lava flows. Pyroclastics are pieces of lava explosively thrown out of a volcano by the expansion of gas bubbles. Two types of pyroclasts that I'm sure you are familiar with are ash and cinders. A good example of an eruption that produced a cinder cone is Paricutin in central Mexico. Lava and pyroclasts have a variety of uses including building or ornamental stone and road material.