Corona (astronomy) — the luminous outer atmosphere of a star (such as the Sun), visible as a halo.
皆既日食のときには太陽のコロナが肉眼でも見えることがある。
During a total solar eclipse, the Sun's corona can sometimes be seen with the naked eye.
観測装置でコロナの温度や構造を詳しく調べる。
They investigate the temperature and structure of the corona in detail using observational instruments.
Corona — abbreviation for coronavirus; colloquially used to refer to coronaviruses in general.
風邪の原因になるコロナの種類もあると聞いた。
I heard that there are types of coronaviruses that can cause the common cold.
研究所は新たなコロナ株の監視を強化している。
The institute is strengthening surveillance of new coronavirus strains.
会議ではコロナ対策について意見を出し合った。
At the meeting, we shared opinions about coronavirus countermeasures.
Corona — shorthand for COVID-19 (the novel coronavirus disease); commonly used in discussions about the pandemic.
コロナの影響で海外旅行の計画を延期した。
I postponed my plans for overseas travel because of the coronavirus (COVID-19).
ワクチン接種が進み、コロナの重症化率は下がった。
With vaccination progressing, the severity rate of COVID-19 has decreased.
コロナ禍でリモートワークが一般化した企業も多い。
Many companies made remote work common during the COVID-19 pandemic.