What's the difference between countrywoman and countrywomen?

Countrywoman

Definition:

• (n.) A woman born, or dwelling, in the country, as opposed to the city; a woman born or dwelling in the same country with another native or inhabitant.

Example Sentences:

• (1) His countrywoman, Saoirse Ronan, was nominated in the best actress category for her role in 1950s immigrant tale, Brooklyn.
• (2) The authors describe the first case of death from AIDS in the USSR of our countrywoman.

Countrywomen

Definition:

• (pl. ) of Countrywoman

Example Sentences:

• (1) The role of the WI was crucial in two ways: on the one hand, the government relied on its links with the National Federation of Women’s Institutes to make direct requests of countrywomen to look after evacuees, to collect everything – from National Savings to bones for the munitions industry – and to care for the nation’s larder; on the other hand, the WI at institute level offered women a safety valve.