Final answer:
A notable contrast between Native American and European language families is the former's communal land use versus the latter's individual land ownership, leading to cultural clashes as Europeans settled in the Americas.
Step-by-step explanation:
One specific contrast between language families among Native Americans and Europeans in the period 1491-1607 is the concept of land ownership and the way it influenced their interactions. While Native American languages and cultures often lacked a strict notion of individual land ownership, preferring communal and fluid use of land, European languages came with legal and cultural concepts that emphasized individual property rights and permanent settlement. This difference led to conflicting worldviews regarding land and resource use, significantly impacting Native lifestyles and autonomy as European colonies expanded and exerted their land ownership paradigm over the continent.