The authorised capital which is issued to the public is known as issued capital

equity share capital is one of the class of capital

issued share capital

When bonus shares are issued share capital also change as amount from retained earnings or reserves is utilized to issue bonus shares and it increase the share capital while decrease the reserves or retained earnings.

[Debit] Cash / bank xxxx

[Credit] Share capital account xxxx

Authorized share capital is that maximum amount of share capital a company can do it’s business and return in article of association of company and company cannot raise more capital then this limit unless changes the limit of authorized capital.
Issued share capital is that amount of capital which is issued to public for purchase or invest in company.