stereoscope

to use / to employ / to make use of, to apply / to spend

something that occupies three-dimensional space (is not two-dimensional) / (geometry) solid

observation

observe

substance; entity

a portrait, one's likeness / an image produced by an electronic device such as a television; or imagery (images as a whole)

a portrait

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