Flora and fauna (= plants and animals) Fauna

Forage forage (for something) (of a person or an animal) to search widely for food

• 
  The female only leaves the young when she forages for food.
  
• 
  The pigs are allowed to forage around in a large orchard.
  

Dusk

​the time of day when the light has almost gone, but it is not yet dark

• 
  at dusk The street lights go on at dusk.
  
• 
  I’ve been on the go from dawn to dusk.
  
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  She arrived home as dusk was falling.
  
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  The lamps twinkled in the gathering dusk.
  

Dawn
the time of day when light first appearsSYNONYM daybreak

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  at dawn They start work at dawn.
  
• 
  It's almost dawn.
  
• 
  We arrived in Sydney as dawn broke (= as the first light could be seen).
  
• 
  I woke up just before dawn.
  
• 
  summer’s early dawns
  
• 
  He works from dawn till dusk (= from morning till night).
  
• 
  The plane took off, leaving London behind in a blue-grey dawn.
  

Thrive
​to become, and continue to be, successful, strong, healthy, etc. SYNONYM flourish

• 
  New businesses thrive in this area.
  
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  These animals rarely thrive in captivity.
  

Benign
​(formal) (of people) kind and gentle; not hurting anybody

• 
  You would never have guessed his intentions from the benign expression on his face.
  

breach
breach something to not keep to an agreement or not keep a promise SYNONYM break

• 
  The government is accused of breaching the terms of the treaty.
  
• 
  A doctor was sacked for allegedly breaching patient confidentiality.
  
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  The proposed changes breached trade union rules.
  

contemporary
 belonging to the same time

• 
  We have no contemporary account of the battle (= written near the time that it happened).