1. float, boat
2. fall, ball
3. well, shell
-logy suffix or -ology suffix means "the study of". A lot of fields in different types of sciences ends in -logy denoting particular fields of study. An example to prove such conclusion or theory would be biology, the study of life. Sociology is the study of human structure. Anthropology is the study of humans.
General Israel Putnam told his men "Dont fire until you see the whites of there eyes because some of them were too eagar to shoot and he wanted them to shoot at close range so they could hit the enemy. This also saved ammunition and helped them fight better.