| A | B |
| cooperate | (v.) work together on a project |
| coordinate | (v.) make separate things work together |
| correspond | (v.) write messages back and forth |
| co-worker | (n.) person that you work with |
| decaf | (n.) coffee or tea without caffeine |
| debug | (v.) fix problems in a computer program or app |
| decay | (v.) fall apart due to age or "rot" |
| decipher | (v.) figure out (difficult problem or language) |
| decline | (v.) go down in level |
| decrease | (v.) go down in amount |