Hereditary condition and Lactase deficiency

Hereditary condition noun - A disease or disorder that is inherited genetically.

Lactase deficiency and hereditary condition are semantically related. In some cases you can replace phrase "Lactase deficiency" with "Hereditary condition", this phrases are similar.

Lactase deficiency noun - Congenital disorder consisting of an inability to digest milk and milk products; absence or deficiency of lactase results in an inability to hydrolyze lactose.

Hereditary condition and lactase deficiency are semantically related. You can use "Hereditary condition" instead a noun phrase "Lactase deficiency".