specialization; specialisation; differentiation
selective; optional; alternative
irradiation; radiation; beaming; exposure (to light); illumination
supplementary explanation
subjectivity; subject (philosophical); ego; one's personal opinion; one's own idea
patron (of the arts, an artist, etc.); patroness; sugar daddy; man who provides for a woman (e.g. a geisha); patron; master
equivalence; equal value; parity; (logical) equivalence
shade; shadow; behind (something); other side; background; behind the scenes
acute stress reaction; acute stress disorder; psychological shock; mental shock; emotional shock; emotional trauma
somehow; for some reason; without knowing why
context (of a passage); line of thought; context; environment; circumstances
to get tired out; to be exhausted
dry cough; hacking cough; intentional cough (i.e. to get someone's attention)
empty air; sky; shunyata; emptiness; air force; fruitlessness; meaninglessness
moderate; reserved; conservative; humble; mild-mannered; self-effacing
to be eye-popping; to be staggering; to be amazing
frame; flame (abusive or threatening message)
(apparently) that's what it's like, isn't it
self-torturing; masochistic
ankle; malleolus; ankle bone
texture; space between threads (i.e. in cloth)
without omission; in full
to screw; to twist; to distort; to parody; to torture; to wrest
medical experiment on a living person or animal
to narrowly escape (e.g. death); to hang onto (life); (arch.) to ascertain; (arch.) to make definite
to lead someone around by the nose
(coming to a) mutual understanding; understanding each other
digitization; digitalization