A
B
C
D
E
100

To constantly preoccupy the mind

Obsess

100
  1. 1A. a regular course of procedure, 1b habitual or mechanical performance of an established procedure

Routine
100
  1. showing or characterized by a patronizing or superior attitude toward others. 

Condescending

100
  1. a sequence of events especially when imagined

especially : an account or synopsis of a possible course of action or events.    

Scenario

100

 a piece of machinery 

          a process, technique, or system for achieving a result

Mechanism

200
  1. being beyond what is normal or expected : suggesting superhuman or supernatural powers

Uncanny

200
  1. a fenced or walled-in area containing a group of buildings and especially residences

Compound

200
  1. a misleading image presented to the vision : optical illusion  something that deceives or misleads intellectually

Illusion

200
  1.  of or relating to an inauguration  marking a beginning : first in a projected series

Inaugural 

200

of, relating to, or concerned with atoms atomic physics nuclear sense

Atomic

300

the growing of plants in nutrient solutions with or without an inert medium (such as soil) to provide mechanical support

Hydroponics

300

a noticeable and usually significant difference or dissimilarity

Disparity

300

noisy especially in a vulgar or offensive manner : clamorous   completely obvious, conspicuous, or obtrusive especially in a crass or offensive manner : brazen

Blatant 

300

an original model on which something is patterned : archetype  an individual that exhibits the essential features of a later type a standard or typical example

Prototype

300

extremely or excessively careful or detailed

Fastidious

400

transmitting or capable of transmitting infection : containing pathogenic agents which may be transmitted

infectious droplets  spreading or capable of spreading rapidly to others

Infectious

400

imitative  imitation, mock sense

Mimicked 

400

occurring or succeeding by turns

                                  Noun- one that substitutes for or alternates with another

Alternate

400

covering completely or broadly : inclusive

Comprehensive

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