To inject s.o. with medicine.
The -an imp. focuses on the medicine being injected. The -un imp. focuses on the person being injected. The pa--un imp. focuses on the one being allowed to inject s.o.
Dr. Esperanza gave me an injection yesterday.
To poke; to stab.
The -an imp. focuses on the instrument used to stab s.o. The -un imp. focuses on the patient. The pa--un imp. also focuses on the instrument being used to stab s.o. with but it is the same instrument that the other party was about to use to stab with.
Poke his side so he will be startled.