| A | B |
|---|
| height | most advanced point |
| vacuum | empty space; a void |
| convenient | suitable |
| rhythm | music, speech, or movements characterized by equal or regularly alternating beats |
| commercial | relating to a product |
| necessary | essential |
| receipt | written acknowledgment of something received |
| permanent | lasting indefinitely |
| disease | sickness; illness |
| immediate | occurring at once |
| laboratory | place ecquipped for conducting scientific experiments |
| guarantee | pledge or promise |
| technology | application of scientific knowledge to serve man in industry, commerce, medicine and other fields |
| original | first |
| niece | sister's or brother's child |
| colonel | officer in the armed forces |
| schedule | written chart documenting times events will occur |
| choir | organized group of singers |
| funeral | service performed during burial |
| embarass | feeling selfconscious |
