One word Substitution…2

Lexicographer
an author or editor of a dictionary

Theology
study of religion and religious ideas

Numismatics
, the study of coins

Anthropology
study of mankind

Entomology
study of insect

Astrology
the study of stars to predict the future

Astronomy
the study of stars and planets

Pathology
the study of disease

Horology
the art of designing and making clocks

Apiology
scientific study of bees

Cardiology
scientific study of human heart

Apiology
scientific study of bees

Cynology
scientific study of domestic dogs

Dendrology
the study of tree

Dermatology
study of the skin

Genetics
the study of heredity

Numismatic
one involved in the study of coins and medals

Ornithology
the study of birds

Entomology
study of insects

Enology
the art of wine making

Felinology
the study of cats

Graphology
the study of handwriting

Gynecology
study of women

Hepatology
study of liver, gallbladder, biliary tree

Hippology
the study of horses

Hydrology
study of water

Nephrology
study of the kidney

Neurology
Study of the nervous system

Oncology
study of cancer

Ophthalmology
study of the eye and eye diseases

Orology
study of mountains & their mapping

Oncology
study of cancer

Audiology
study of hearing disorders

Seismology
Study of earthquakes

Serpentology
snakes

Toxicology
study of poisons

Zoology
the study of animals

Pediatrics
branch of medicine dealing with children

Orthopedic
related to treatments of bone, joint, and muscle problems

Hydrology
study of water

Meteorology
the study of weather

Petrology
scientific study of rocks

Calligraphy
the art of fine handwriting

Cacography
bad handwriting; poor spelling

Telegraph
writing from a distance

Chirography
the art of handwriting

Photograph
picture drawn by light

Cartography
The science of making maps

Biography
a book written about a person’s life

Lithography
printing from a flat stone

Autobiography
person’s life story written by himself

Autonomy
(n) self-government, political control

Automobile
a self-propelled passenger vehicle that moves

Automatic
self acting

Autograph
a person’s own signature

AUTOCRAT
dictator, a dictator

Philanthropy
love of mankind

Bibliophile
a lover of books

androphile
Lover of Man

Philanthropy
love of mankind

Philogeny
Evolutionary history

Philology
study (love) of language and literature

Androgyny
a blending of masculine and feminine attributes

Omniscient
all-knowing

Omnipresent
present everywhere

Omnivorous
eating every kind of food

Omnibus
an anthology of articles on a related subject or an anthology of the works of a single author