Apprehensiveness and Sombreness

Apprehensiveness noun - An uneasy state of mind usually over the possibility of an anticipated misfortune or trouble.

Sombreness and apprehensiveness are semantically related. In some cases you can replace term "Sombreness" with "Apprehensiveness", this nouns are similar.

Sombreness noun - A feeling of melancholy apprehension.

Apprehensiveness and sombreness are semantically related. Sometimes you can use "Apprehensiveness" instead a noun "Sombreness".