Group 1 analyse, verb consider in detail and subject to an analysis in order to discover essential features or meaning break down into components or essential features make a mathematical, chemical, or grammatical analysis of

percent, noun
a proportion in relation to a whole (which is usually the amount per hundred)

period, noun
an amount of time
the interval taken to complete one cycle of a regularly repeating phenomenon
(ice hockey) one of three divisions into which play is divided in hockey games
a unit of geological time during which a system of rocks formed
ganoid fishes swarmed during the earlier geological periods
the end or completion of something
death put a period to his endeavors

policy, noun
a plan of action adopted by an individual or social group
it was a policy of retribution
a line of argument rationalizing the course of action of a government
they debated the policy or impolicy of the proposed legislation
written contract or certificate of insurance
you should have read the small print on your policy

principle, noun
a basic generalization that is accepted as true and that can be used as a basis for reasoning or conduct
their principles of composition characterized all their works
a rule or standard especially of good behavior
a man of principle
a basic truth or law or assumption
the principles of democracy
a rule or law concerning a natural phenomenon or the function of a complex system
the principle of the conservation of mass
rule of personal conduct

proceed, verb
continue talking
move ahead; travel onward in time or space
We proceeded towards Washington
follow a procedure or take a course
follow a certain course
The inauguration went well
continue a certain state, condition, or activity

process, verb
subject to a process or treatment, with the aim of readying for some purpose, improving, or remedying a condition
process cheese
deal with in a routine way
I'll handle that one
perform mathematical and logical operations on (data) according to programmed instructions in order to obtain the required information
The results of the elections were still being processed when he gave his acceptance speech
institute legal proceedings against; file a suit against
march in a procession

process, noun
a particular course of action intended to achieve a result
(psychology) the performance of some composite cognitive activity; an operation that affects mental contents
the process of thinking
a writ issued by authority of law; usually compels the defendant's attendance in a civil suit; failure to appear results in a default judgment against the defendant
a mental process that you are not directly aware of
the process of denial
a natural prolongation or projection from a part of an organism either animal or plant
a bony process

require, verb
require as useful, just, or proper
consider obligatory; request and expect
make someone do something
have need of

research, verb
attempt to find out in a systematically and scientific manner
The student researched the history of that word
inquire into
the students had to research the history of the Second World War for their history project