The 'season' group
These nouns refer to times or periods of time. The first noun gives more information about the time, for example indicating when it is or what happens then.
age (Stone) equinox (spring) era holidays hours (office) period (exercise) season (plum) season (baseball) season (summer) shift (afternoon) slot (evening)
For many North Yorkshire children the Easter holidays start this afternoon.
Even during normal office hours it would be easy for someone to walk in and out of the car park without being challenged or even seen.
As the baseball season begins, the college basketball season is nearing its finish.