'Sons' in the Bible

Then Joshua, with all Israel accompanying him, took Zerah's son Achan, along with the silver, the mantle, the gold, his sons, his daughters, his oxen, his donkeys, his sheep, his tent, and everything that belonged to him to the Valley of Achor.

Hepher's son Zelophehad, grandson of Gilead and great-grandson of Manasseh's son Machir had no sons, only daughters. These are the names of his daughters: Mahlah, Noah, Hoglah, Milcah, and Tirzah.

since the granddaughters of Manasseh received an inheritance along with his sons. (The land of Gilead belonged to the rest of the descendants of Manasseh.)