becquerel / sievert

What is the difference between two units related to radiation?

(becquerel) Symbol: Bq / Base data: Radiation, disintegration rate.
Radiation or disintegration rate when the number of disintegrations of radionuclides is once per second.
(sievert) Symbol: Sv / Base data: Dose equivalent.
When the value resulting from multiplying the value of the absorbed dose shown in grey (Gy) by the coefficient specified by Ordinance of the Ministry of Economy, Trade and Industry is “1”

Radiation emitting and receiving sides

After the Fukushima nuclear power plant accident in 2011, the two units of “becquerel” and “sievert” suddenly received a lot of attention. Becquerel expresses the radiation-emitting ability of radioactive substances or, in other words, the strength of radiation. Sievert shows the effect of radiation on the human body.