| A | B |
| excavate | to dig or dig out; to uncover by digging |
| excavation | the act or process of digging out |
| insulate | to prevent the passage of heat, electricity or sound into or out of something, especially by surrounding or lining with something that blocks such a flow |
| insulation | material that is used to prevent heat loss |
| explore | to look in to; to investigate; try out |
| exploration | the act of investigating something |
| situate | to place in a certain spot or position; to locate |
| situation | a combination of circumstances at a given moment |
| examine | to investigate in detail; observe carefully |
| examination | investigation; analysis; a set of written or oral questions or exercises to test knowledge or skills |
| combine | to join or cause to join to make one substance |
| combination | something that results from joining one or more things; a mixture |
| contribute | to give or supply in common with others |
| contribution | something given; a donation |
| construct | to build; erect |
| construction | the act or process of building something |
| cooperate | to work or act with another or others for a common purpose |
| cooperation | willingness to work with others for a common purpose |
| admire | to have a high opinion of; feel respect for |
| admiration | a high opinion; respect; esteem; praise and approval |
| attract | to draw, pull, or direct to oneselfby some quality or action |
| attraction | something that draws or pulls people or things to itself by some quality or action |
| connect | to join or come together; link |
| connection | a relationship; something that connects or joins; a link |