Regulate
Part of speech: verb
Definition: To dictate policy. To control or direct according to rule, principle, or law. To adjust to a particular specification or requirement: regulate temperature. To adjust (a mechanism) for accurate and proper functioning. To put or maintain in order: regulate one's eating habits.
Example sentence: Markets are, in the end, man-made devices for utilitarian purposes, not a force of nature that we should not try to resist. If they end up serving the interests of only a tiny minority, as is increasingly the case, we have the right - and indeed the duty - to regulate them in the interest of greater social good.
Modulate
Part of speech: verb
Definition: To regulate, adjust or adaptTo change the pitch, intensity or tone of one's voice or of a musical instrumentto vary the amplitude, frequency or phase of a carrier wave in proportion to the amplitude etc of a source wave (such as speech or music)to move from one key or tonality to another, especially by using a chord progression