to carry out or perform
[I do my words at a table.]

[I can do a headstand.]

[He does the splits.]

past tense of do
[I did a headstand yesterday.]

the act of carring out or performing
[I am doing a headstand.]

[I am doing the splits.]

past participle of do
[I have done a headstand before.]

do not
[I don't do headstands like Lisa.]

from a higher to a lower place
[The bowl is down off the shelf]