usage: make more intense, stronger, or more marked; "The efforts were intensified", "Her rudeness intensified his dislike for her"; "Pot smokers claim it heightens their awareness"; "This event only deepened my convictions"
2. compound, combine, add
usage: put or add together; "combine resources"
3. compound, account, calculate
usage: calculate principal and interest
4. compound, assemble, piece, put together, set up, tack, tack together