I was trying to study about bootstrapping in electronic circuits.

When I checked in Internet Wiki says it is a method to improve the input impedance of an amplifier.

In the power electronics context, it has another definition.(https://techweb.rohm.com/knowledge/dcdc/dcdc_sr/dcdc_sr01/829). Here it has another meaning (https://m.eet.com/media/1152270/24127-45890.pdf).

Could you please clarify bootstrapping?