I.
verb
ADVERB
▪ exactly , precisely
VERB + PINPOINT
▪ can
▪
With this you can ~ the precise location of the sound.
▪ be difficult to , be hard to
PREPOSITION
▪ as
▪
Stress at work was ~ed as the cause of his illness.
Pinpoint is used with these nouns as the object: ↑ cause , ↑ location , ↑ problem , ↑ reason
II.
adj.
Pinpoint is used with these nouns: ↑ accuracy , ↑ bombing , ↑ precision