| A | B |
| conjecture (verb) | to make a wild guess |
| conjecture (noun) | an opinion or judgment based on little or no evidence |
| dejection | lowness of spirits |
| injection | an act of throwing or forcing into something |
| interjection | a word or cry expressing sudden or strong feeling |
| jet | an airplane powered by jet engines |
| jetsam | goods thrown overboard to lighten a ship in distress |
| jettison | to throw goods overboard from a ship or airplane especially to lighten it in distress |
| jetty | a pier built out into the water to influence the current or protect a harbor |
| object | to oppose something firmly usually with words |
| projectile | something (as a bullet or rocket) thrown or driven forward |
| rejection | having been refused admition |
| subject (noun) | a department of knowledge or learning |
| trajectory | the curve that a body (as a planet in its orbit or a rocket) travels along in space |
| subject (verb) | to bring under control or rule |