A noun, a verb and an adjective.

guts |gʌt|

noun

1  • ( guts) entrails that have been removed or exposed in violence or by a butcher.

• ( guts) the internal parts or essence of something : the guts of a modern computer
evolve |ɪˈvɒlv|verb

1 develop gradually, esp. from a simple to a more complex form : [ intrans. ] the company hasevolved into a major chemical manufacturer | the Gothic style evolved steadily and naturally fromthe Romanesque | [ trans. ] each school must evolve its own way of working.

• (with reference to an organism or biological feature) develop over successive generations, esp. as a result of natural selection : [ intrans. ] the populations are cut off from each other and evolve independently.2 [ trans. ] Chemistry give off (gas or heat).
surgical |ˈsəːdʒɪk(ə)l|adjectiveof, relating to, or used in surgery : a surgical dressing | a surgical ward.• (of a special garment or appliance) worn to correct or relieve an injury, illness, or deformity : surgical stockings.• figurative denoting something done with great precision, esp. a swift and highly accurate military attack from the air : surgical bombing.