thoughtful vs lost

thoughtful is not a noun while lost is a noun.

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

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

thoughtful (adjective)	lost (adjective)
exhibiting or characterized by careful thought	no longer in your possession or control; unable to be found or recovered
taking heed; giving close and thoughtful attention	spiritually or physically doomed or destroyed
considerate of the feelings or well-being of others	not gained or won
having intellectual depth	unable to function; without help
characterized by solemn, sincere manner	not caught with the senses or the mind
	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