lost vs thoughtful

lost is a noun but thoughtful is not a noun.

Word	Noun	Adjective	Verb	Adverb
lost	Yes	Yes	No	No
thoughtful	No	Yes	No	No

lost (noun)	thoughtful (noun)
people who are destined to die soon

lost (adjective)	thoughtful (adjective)
no longer in your possession or control; unable to be found or recovered	exhibiting or characterized by careful thought
spiritually or physically doomed or destroyed	taking heed; giving close and thoughtful attention
not gained or won	considerate of the feelings or well-being of others
unable to function; without help	having intellectual depth
not caught with the senses or the mind	characterized by solemn, sincere manner
perplexed by many conflicting situations or statements; filled with bewilderment
deeply absorbed in thought
having lost your bearings; confused as to time or place or personal identity
cannot be recovered or regained