Loss vs. lost
by Kate Asbury Larkin
Although loss and lost both deal with the same subject, they are not used in the same way.
Remember it this way: Lost and past tense both contain the letter “t.” #boom
Loss is a noun; it is the act or an instance of losing.
That was an unexpected loss.
The family suffered a terrible loss with the death of Jane.
If you sell something at a loss, you are selling it below cost.
Lost is the past tense (and past participle) of lose. Since lost is a verb, you should expect to see it following a subject of some kind.
She lost her car in the crowded parking lot.
Lost as an adjective. Lost can also function as an adjective in a sentence.
The lost child.
A lost opportunity.
My basketball is lost.