Most people also use the word capitalism incorrectly. The capitalism-socialism dichotomy is largely an invention of Marxists. Many who oppose socialism do so because they prefer a society where individual justice is not overshadowed by "collective justice".
The idea is that people are expected to work for their benefits, save up money to form capital and then invest that capital to create a safety net for themselves. Most people on the conservative side are not opposed to helping people who can't help themselves or giving people who did their best but fell on hard times, a break, through bankruptcy.
If a country has a large amount of natural resources like Norway, it can be somewhat successful in dispensing with individual excellence. For example, Qatar has the highest per capita income in the world. However, this may not be sustainable since natural resource eventually run out. For example : https://en.wikipedia.org/wiki/History_of_Nauru#Modern-day_Na...
Norway used its oil profits to create a sovereign wealth fund and invested it in stocks. What is the system called when dispensable income is used to form capital which is then invested in other ventures to create additional revenue streams ? I would call it capitalism.
If all countries where Norwegian money is invested decided to become socialist and seized their property, Norway will not be upheld as a socialist success, would it ?