Block of Four vs Time Contrast

GRE Verbal Problem Solving
1

Is there is a distinction between Block of Four and Time Contrast? They feel the same to me in that you’re putting

Time Contrast Block of Four Answers
Before Adjective 1 Word 1 (or unknown)
After Adjective 2 Word 2 (or unknown)

Is Time Contrast just a special cast of Block Of Four or is there a deeper difference?

2

Time contrast specifically applies when there is a distinction between the past and present and contrast in the sentence comes from that

1 Like
3

They are the same strategy though? Just identified in different ways?

4

Yeah, Time Contrast is a version of Block of Four