Delete the character under the cursor (‘delete-char’).

Delete the character before the cursor (‘backward-delete-char’).

Delete backward one word (‘backward-kill-word’).

Delete forward one word (‘kill-word’).

Delete the entire line (‘kill-line’).

Delete all the characters between the beginning of the input line and
the point (‘kill-to-beginning-of-line’).

Delete all the characters between the point and the end of the input
line (‘kill-to-end-of-line’).

Delete all the spaces around the point, leaving only one space
(‘just-one-space’).

Delete all the spaces around the point
(‘delete-horizontal-space’).

Save the region between the point and the mark into the kill "ring" and
then kills it (‘kill-region’).  Note that there is no real
kill-ring here.  The so-called kill-ring has only one entry.

Save the region between the point and the mark without killing it
(‘kill-ring-save’).