The chart 
compare
 the difference Change the verb form
compares
of
 the cutting tools between 1.4 Change preposition
in
millions
 and 0.8 Change to singular
million
miliion
 Correct your spelling
million
year
 ago.
Fix the agreement mistake
years
Overall
, the size of Linking Words
cutting
 remained Correct article usage
the cutting
unchange
 Correct your spelling
unchanged
while
 the size of the cutter became larger. Linking Words
On the other hand
, the cutter became thinner significantly.
In detail, Linking Words
both
 Change preposition
in both
front
 view and the back view, the Correct article usage
the front
tool
 Use synonyms
in 
0.8 Change preposition
apply
million
 Use synonyms
year
 ago was huger than that in 1.4 Change to a plural noun
years
million
 years ago.
In Use synonyms
term
 of cutting size, both of the Fix the agreement mistake
terms
tools
 Change noun form
tool's
tools'
instrument
 could chop the thing in 5cm. When we look at the side view of the tools, we can observe that Fix the agreement mistake
instruments
tool
 B is much thinner than Use synonyms
tool
 A.
The shape of the cutter Use synonyms
in 
0.8 Change preposition
apply
million
 Use synonyms
year
 ago showed more dimension than that in 1.4 Change to a plural noun
years
million
 years ago. Use synonyms
Furthermore
, Linking Words
tool
 B was in lighter grey colour than Use synonyms
tool
 A.Use synonyms