This Astronomy Picture of the Day shows a full moon, illuminated by reflected sunlight--for more on this image, see Astronomy Picture of the Day: Saguaro Moon. But we can also see the moon by reflected Earthshine, as shown in this APOD of a new moon.
Compare the pattern of the maria (the smooth dark surfaces on the moon) in these images. The moon rotates with the same part facing Earth--is that consistent with what you see? To learn more about this, and about tides in the solid Earth and moon, see this Bad Astronomy post.
