If there is a small eco-village with 2 or 3 families or households living on a piece of land as big as 8 acres, with a commun house to gather, and solidarity and interaction when they feel like, can this be called a commune?
yes course! communal living doesn't just mean living with other people. it means your relationship with the earth. two people can be a commune, hell, one person could. if you think its right, if you think it fits the description. then yes.