1. "money" is not similar to technology. (technology is equipment developed from scientific knowledge)
2. "sum" is not similar to element (an element is either one part of something, or the periodic table of elements)
3. "conceal" is the opposite of reveal. (revealing is showing something that was previously a secret)
4. A "map" is different from a region. (a region is a area of a country, usually without fixed boundaries)
5. "moderate" isn't like intense. (intense is a degree of something, like "intense concentration")
6. "exterior" is the opposite of internal. (internal is basically just "inside")