test tube (glass tube)

a liquid

pour into, fill / sprinkle on, water something / concentrate effort, focus energy / for rain or snow to fall

pour into something / serve food, dish out food, fill a container with food

he / distal demonstrative, something far off removed from both speaker and listener: that / boyfriend

distal demonstrative, something far off removed from both speaker and listener: that, yon / particularly, male personal third person pronoun: he / by extension from he: boyfriend

he; boyfriend

liquid soap

liquid nitrogen

liquid oxygen