Luminescent means capable of exhibiting luminescence. It also means emitting light not caused by heat. Here are some synonyms: glowing<span>, </span>shining<span>, </span>fluorescent<span>, </span>radiant<span>, </span>luminous<span>,</span><span> </span>phosphorescent<span>, </span><span>effulgent.</span>
The only noun I know derived from the verb to entomb would be the noun entombment. It is an abstract noun, which means that it doesn't have a physical shape - you cannot touch it or smell it, just like with love, or hate, or happiness. Entombment is the process of placing a dead body into a tomb, or a grave.
