A dictionary of Confusable Phrases: More Than 10,000 Idioms and Collocations

be out of the woods • take to the woods
be out of the woods —(often negat.) be finally free from trou-
ble or difficulties (also: be out of the wood): The Prime Minister
is by no means out of the woods, and must fight to defend his
leadership.
Note: 
The expression does not correlate in meaning with the
phrase come out of the woodwork— appear as though out of
nowhere, especially in large numbers: He won the lottery and
has had old “friends” and distant relatives coming out of the
woodwork ever since.
take to the woods— run away from one’s responsibilities; get
away from trouble and hide: When trouble comes, wise men
take to their work; weak men take to the woods.
be over someone’s head • hang over someone’s
head
be over someone’s head —(also: be above someone’s head) said
of smth. too difficult to understand: I bought a handful of
photographic magazines and when I got home to read them,
I found they were completely over my head.
Note: 
The expression does not correlate in meaning with the
phrase be in over one’s head—be involved in a situation too
difficult to deal with: He realized that he was in over his head,
and that only his family could help him.
hang over someone’s head —(of an evil, calamity, etc.) hover
over a person; be imminent: Celia Palmer had been acquitted
of all the gravest charges hanging over her head this long time.
Note: 
Neither expression correlates in meaning with the phrase
hold something over someone’s head
— remind a person of his
mistake or failure: If I turned up late, my parents would hold
it over my head for the rest of my life, but if it’s Taylor, well
there’s always the exception.