What's the difference between beginning and unbegun?

Beginning

Definition:

(p. pr. & vb. n.) of Begin
(n.) The act of doing that which begins anything; commencement of an action, state, or space of time; entrance into being or upon a course; the first act, effort, or state of a succession of acts or states.
(n.) That which begins or originates something; the first cause; origin; source.
(n.) That which is begun; a rudiment or element.
(n.) Enterprise.

Example Sentences:

(1) The findings indicate that there is still a significant incongruence between the value structure of most family practice units and that of their institutions but that many family practice units are beginning to achieve parity of promotion and tenure with other departments in their institutions.
(2) Typological and archaeological investigations indicate that the church building represents originally the hospital facility for the lay brothers of the monastery, which according to the chronicle of the monastery was built in the beginning of the 14th century.
(3) Anthropometric and nutritional (serum albumin and transferrin) values were normal in both groups both at the beginning and at the end of the treatment period.
(4) In both experiments, Gallus males were placed on a commercial feed restriction program in which measured amounts of feed are delivered on alternate days beginning at 4 weeks of age.
(5) Wilder Penfield's development of surgical methods for treating focal cerebral seizures, beginning with his early work in Montreal in 1928, is reviewed.
(6) A man named Moreno Facebook Twitter Pinterest Italy's players give chase to an inscrutable Byron Moreno, whose relationship with the country was only just beginning.
(7) Right from the beginning, I had been mad about movies.
(8) US presidential election 2016: the state of the Republican race as the year begins Read more So far, the former secretary of state seems to be recovering well from self-inflicted wounds that dogged the start of her second, and most concerted, attempt for the White House.
(9) Patients were examined before and 12 days after the beginning of lithium treatment.
(10) The results indicate that the legislated increase in the age of eligibility for full Social Security benefits beginning in the 21st century will have relatively small effects on the ages of retirement and benefit acceptance.
(11) Beginning with its foundation by Charles Godon in 1900 he describes the growth of the Federation as an organization of the dental profession which continued despite the interruption of two world wars.
(12) In contrast, T lymphocyte cytolytic activity developed more slowly in regressing sarcomas and attained peak levels coincident with the beginning of tumor regression.
(13) The present study observed that a 40-dB hearing loss, beginning at 17 days postpartum, requires 2 days before it induces susceptibility to audiogenic seizures.
(14) Lawmakers across the globe are beginning to recognize the need to deter this destructive conduct.
(15) He strongly welcomes the rise of the NGO movement, which combines with media coverage to produce the beginning of some "countervailing power" to the larger corporations and the traditional policies of first world governments.
(16) These results indicate that AZT treatment does not completely prevent FeLV infection, even when treatment begins before virus challenge, and that immune sensitization to FeLV proceeds during the prophylactic drug treatment period.
(17) The patients age at the beginning of immunosuppressive treatment ranged from 10 to 22 years.
(18) 5.13pm BST "As I remember September 11, 2012, it was a routine day at our embassy," Hicks begins.
(19) Moreover, complete absence of rhythm disturbances right up to the beginning of cardiac arrest was as frequent in the patient groups as in the control series (around 20%).
(20) Thus, we could not detect an embryotoxic effect of 1 h of maternal insulin-induced hypoglycemia beginning at day 10.6 of development.