Erectile dysfunction and Impotency

Erectile dysfunction noun - Impotence resulting from a man's inability to have or maintain an erection of his penis.

Impotency and erectile dysfunction are semantically related. In some cases you can use "Impotency" instead a noun phrase "Erectile dysfunction".

Impotency noun - The quality of lacking strength or power; being weak and feeble.

Erectile dysfunction and impotency are semantically related. Sometimes you can replace phrase "Erectile dysfunction" with "Impotency", this terms are similar.