### symptom:

Withdrawal symptom
* are common for smokers who go periods without cigarettes
  - compensatory reactions that oppose the primary effects of the drug
  - primarily the opposite of the effects of the drug itself
  - signs the body is recovering from the effects of tobacco
* are the evidence of a physical dependence
  - pains experienced on deprivation of the chosen object
  - usually the opposite of the effects and side effects of the drug
* can be severe with psychiatric drugs.
* can occur in the babies of mothers who use cocaine regularly
  - when use of amphetamines is stopped abruptly
  - take many forms
* develop when the person stops ingesting substances or reduces the amount.
* differ according to the drug and how long the person has been dependent.
* start when the blood alcohol level drops.

Synchronicity
* Synchronicities also appear in dreams or as premonitions
  - often have a symbolic quality that they share with dreams and the deep imagination
* involves both physical and psychological components.
* is always an experience of the unknown
  - something that begins in our consciousness
  - the process which unites two factors, archetypal forces and external events
* meaningful yet acausal connection between events.
* reveals the meaningful connections between the subjective and objective world.
* suggest that there is an interconnection or unity of causally unrelated events.
* term used in two fields, particle physics and psychology.

### syntax:

Generative grammar
* defines knowledge of language as knowledge of syntax.
* is syntax

Synthetic
* Most synthetics are very high in detergent action.
* are also free of the paraffins found in conventional petroleum oils
  - generally lower in density and are often highly porous
  - compounds
  - lightweight, wick moisture away from the skin efficiently and dry out fast
  - man-made gem products
  - manufactured chemically with high burn and leaching potential
  - more resistant than cellulose fibers, while silk is least resistant
  - superior lubricants compared to traditional petroleum oils
  - tough and stable, virtually unaffected by temperature and weather
  - uniform and homogeneous in nature
* can only transfer moisture and have no ability to evaporate it.
* have a tendency to shine and look cheap
  - less good effects, and more side effects than natural progesterone
* kill good, or desirable, insects along with the bad ones.
* melt and leave a smooth, shiny residue.
* offer viscosity stability over a wide temperature range, and reduced friction.
* pose risks to farm workers and the environment.
* withstand more heat and degrade slower than petroleum oils.

Synthetic chemical
* Some synthetic chemicals can pose an even greater threat to males by acting as androgen blockers.
* Some synthetic chemicals contain nutrients
  - plant nutrients
  - disrupt the endocrine system, with dangerous results
* are just a drop in the bucket compared to natural chemicals
  - more toxic than natural chemicals
  - safer than naturally occurring substances
* can also form breakdown products.
* negate the benefits of any plant extracts and essential oils a product contains.
* pose greater carcinogenic hazards than natural chemicals.

Synthetic compound
* Most synthetic compounds have effects
  - similar effects
* Some synthetic compounds encourage biochemical reaction
* Some synthetic compounds find in pollute water
  - interfere with absorption

### synthetic hormone:

Medroxyprogesterone acetate
* administered to men can reduce testosterone levels and semen production.
* synthetic hormone.