A warrant (Swedish: teckningsoption) gives the holder the right to subscribe for new shares in a limited company in the future at a set price. It is a common part of a stock option program.
When a warrant is exercised, new shares are issued through a new share issue, which increases the share capital and can cause dilution. The event must be recorded in the share ledger.

A subscription right is the right to subscribe for new shares in a rights issue.
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An equity option is an option whose underlying asset is a share, either as a call or a put option.
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An option gives the holder the right, but not the obligation, to buy or sell an asset at a set price.
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A stock option program gives, for example, employees the right to buy shares in the future.
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