| A | B |
| tropos | turning |
| phillia | love, friendship |
| phobos | fear |
| syn | with, together |
| photo | light |
| graph | to write or draw |
| tele | far away, distant |
| metron | measure |
| tropics | area of the earth from the equator north to Tropic of Cancer and south to the Tropic of Capricorn |
| phototropic | turning toward light as leaves and flowers do |
| heliotropic | a flower named for its tendency to turn toward the sun |
| thermotropism | turning toward heat as cats do |
| philosopher | one who loves wisdom |
| Philadelphia | city of brotherly love |
| philologist | one who loves words |
| Anglophile | one who loves England |
| phobia | irrational fear |
| agoraphobia | fear of open space |
| claustrophobia | fear of closed spaces |
| phobophobia | fear of fear itself |
| sympathy | to feel with someone else |
| symphony | sounds that go together |
| synonym | two words with the same meaning |
| synchronize | to do things at the same time |
| photograph | picture drawn by light |
| telephoto | light from far away |
| photometer | a device which measures light |
| photosynthesis | a process of putting things together using light |
| phonograph | machine for writing (or recording) sound |
| telegraph | writing from far away |
| autograph | to write one's own name |
| television | seeing distant things |
| telephone | sound from far away |
| telescope | device for looking at distant objects |
| meter | a unit of measure |
| symmetry | measuring the same |
| thermometer | measure heat |
| centimeter | one hundredth of a meter |