Answer:
Civic nationhood is a political identity built around shared citizenship within the state. Thus, a "civic nation" is defined by not language or culture but political institutions and liberal principles, which its citizens pledge to uphold. Membership in the civic nation is open to anyone who shares those values
Step-by-step explanation:
1) Ethnic nation, Ethnic nationalism defines the nation in terms of ethnicity, which always includes some element of descent from previous generations, i.e. genophilia. It also includes ideas of a culture shared between members of the group and with their ancestors, and usually a shared language.
2) Cultural nation, Cultural nationalism defines the nation by shared culture. Membership (the state of being members) in the nation is neither entirely voluntary (you cannot instantly acquire a culture), nor hereditary (children of members may be considered foreigners if they grew up in another culture).