The Senate and House of Representatives both have the same salary status; the Vice President of the United States is also the President of the Senate
The "advice and consent" powers (such as the power to approve treaties) were granted to the Senate alone.
The House, however, can initiate spending bills and has exclusive authority to impeach officials and choose the president in an Electoral College deadlock.
The Senate and its members generally enjoy greater prestige than the House because Senators serve longer terms (six years), are less in number, and (in all but seven states) represent larger constituencies than Representatives, serving to represent entire states rather than largely-arbitrary districts.
Most bills may be introduced in either House of Congress. However, the Constitution provides that "All bills for raising Revenue shall originate in the House of Representatives." As a result, the Senate does not have the power to initiate bills imposing taxes.
Historically, the Senate has disputed the interpretation advocated by the House. However, whenever the Senate originates an appropriation bill, the House simply refuses to consider it, thereby settling the dispute in practice. Although, it cannot originate revenue bills, the Senate retains the power to amend or reject them.
The upper house may add to them what it pleases.
The approval of both the Senate and the House of Representatives is required for any bill, including a revenue bill, to become law. Both Houses must pass the exact same version of the bill; if there are differences, they may be resolved by a conference committee, which includes members of both bodies.
The Constitution provides that the Senate's "advice and consent" is necessary for the President to make certain appointments and to ratify treaties, while the House must confirm the nomination of a new Vice President under the 25th Amendment.
Thus, in terms of potential to frustrate presidential appointments, the powers of the Senate are more extensive than those of the House.
The Constitution empowers the House of Representatives to impeach federal officials for "Treason, Bribery, or other high Crimes and Misdemeanours" and empowers the Senate to try such impeachments.
Under the Twelfth Amendment, the House has the power to elect the President if no presidential candidate receives a majority of votes in the Electoral College.
Source: United States Congress website