Genetic defect and Lactose intolerance

Genetic defect noun - A disease or disorder that is inherited genetically.

Lactose intolerance and genetic defect are semantically related. In some cases you can replace phrase "Lactose intolerance" with "Genetic defect", this phrases are similar.

Lactose intolerance 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.

Genetic defect and lactose intolerance are semantically related. You can use "Genetic defect" instead a noun phrase "Lactose intolerance".