58. exist, coexist (v) - existence (n) - non-existent, existing, pre-existing (adj)
59. invent (v) - invention, inventor, inventiveness (n) - inventive (adj)
60. safe, unsafe (adj) - safe, safety (n)
61. sleep (v) - sleeper, sleepiness, sleeplessness, asleep, sleepless, sleepy, sleeping (adj)
62. peace (n) - peaceful (adj) - pacify (v)
63. law, lawyer, outlaw (n) - lawful, unlawful (adj) - outlaw (v)
64. poor, poverty, poorness (n) - poor (adj)
65. crime, criminal, criminologist (n) - criminal, incriminating (adj) - incriminate (v)
66. health (n) - healthy, unhealthy (adj)
67. home (n) - homeless, homely (adj) - home (v)
68. wealth (n) - wealthy, unwealthy (adj)
69. die (v) - dead, death (n) - dead, deadly, deathly (adj) - deaden (v)
70. stress (v) - stress, distress (n) - stressed, stressful, distressing (adj)
71. physics (n) - physical (adj)
72. perform (v) - performance, performer (n)
73. excite (v) - excitement (n) - excitable, excited, exciting, unexciting (adj)
74. photograph, photo, photographer (n) - photogenic, photographic (adj) - photograph (v)
75. origin, original, originality, originator (n) - original, unoriginal (adj) - originate (v)
76. invite (v) - inviting, uninvited (adj) - invite, invitation (n)
77. necessary, unnecessary (adj) - necessity (n) - necessitate (v)
