The large white cells above are neutrophils, the most common type of white blood cell,.  The one on the left is a band neutrophil and the one on the right is a segmented neutrophil.

The large white cell above, at the top, is an eosinophil.  Notice the grain-like appearance of the cytoplasm, hence the name granulocyte.

There is a basophil in the center of the field with numerous coarse, dark purple granules in the cytoplasm. They are infrequent in a normal blood smear, and their significance is uncertain. A band neutrophil is seen on the left, and a large, activated lymphocyte on the right.