Collins' dictionary declared the word "lockdown" as the word of 2020, after a large increase in its use during the pandemic.
Lexicographers recorded more than 250,000 uses of "lockdown" during 2020, up from just 4,000 last year.
The word "sums up the shared experience of billions of people," Collins said.
Other terms related to the pandemic in the list of 10 most mentioned words include: "Self-isolation", "social distancing", "corona virus", etc.
According to the dictionary, the word "lockdown" is defined as "the imposition of strict restrictions on travel, social interaction and access to public spaces."
Other most used words, but not related to the pandemic and the virus, relate to this year's social and political events.
After the death of the citizen of color, George Floyd, the abbreviation "BLM" (Black Lives Matter), had an increase in usage of 581%.
"Megxit", the term modeled after the word Brexit used to attract the Duke and Duchess of Sussex, Meghan Markle and Prince Harry, from royal duties also forms part of this list.
Even "TikToker", someone who deals with TikTok was one of the most used words.
The word of the year in 2019, according to Collins, was "Climate strike", a year in which 17-year-old Greta Thunberg led a global environmental movement.
Collins's previous words of the year:
2019: Climate strike
2018: Single-use
2017: Fake news
2016: Brexit
2015: Binge-watch (Term used when watching a series or something else for a very long time until it ends)
2014: Photobomb (Term used when someone or something trivial in the background gets the attention of the whole photo)
2013: Geek (Slang originally used to describe strange or unusual people, while now used for an expert or enthusiast obsessed with a particular hobby, mostly related to technology.)
Source: BBC