complementary
completing or fitting well with something
Roots
- com-: with, together, complete, or intensified
- plen / plet: fill, full, complete
Other words with the plen / plet root
- complement: something that completes another thing
- complete: finished; lacking nothing
- completion: the act or state of finishing
- compliant: willing to obey or go along
- deplete: to use up or empty out
- depletion: reduction by using up
- plenary: complete or fully attended
Complementary things complete each other; do not confuse this with complimentary praise.
The writer paired complementary examples so the contrast would be obvious.