A Member of Parliament is the representative of the voters to a parliament.
In modern politics and history, a parliament is a legislative, elected body of government.
South Africa's YOUNGEST Member of Parliament, Maiden ... by Trending South Africa
In many countries with bicameral parliaments, this category includes specifically members of the lower house, as upper houses often have a different title.
Parliament urges UK PM to oppose Trump misogyny by CNN
Members of parliament tend to form parliamentary groups with members of the same political party.
A parliamentary group, parliamentary party, or parliamentary caucus is a group consisting of members of the same political party or electoral fusion of parties in a legislative assembly such as a parliament or a city council.
A political party is a group of people who come together to contest elections and hold power in the government.