Snow-blindness and Sightlessness

Snow-blindness noun - Temporary blindness caused by exposure to sunlight reflected from snow or ice.

Sightlessness and snow-blindness are semantically related. In some cases you can use "Sightlessness" instead a noun phrase "Snow-blindness".

Sightlessness noun - The state of being blind or lacking sight.

Snow-blindness and sightlessness are semantically related. Sometimes you can replace phrase "Snow-blindness" with "Sightlessness", this terms are similar.