I have some domains that have one English word
Professor.icu
Steps.icu
Enhance.icu
Ability.icu
Analyze.icu
And I sell them
But why .ICU domains cheaper than other TLDs.
Note : iam beginner in the Domain industry
.icu is a Generic TLD delegated in ICANN's New gTLD Program. ShortDot SA manages the TLD and is its registry. Registry backend is CentralNic (CentralNic is the longest-running global domain registry in the world).
Facebook already bought their .icu domain name.
Try to pick a unique English words, and build a small website or app for short-term investment.
Stay away from brandable names like pfizer dot icu or pepsi dot icu etc...