1. Defining Language
The difference between communication and language is that communication has different modalities while language and speech has to do with symbolic systems and the physiological production of language.

2. Dictionary Definitions
A system of communication with its own set of conventions or special words;
Speech peculiar to an ethnic, national or cultural group;
By extension, the articulate or inarticulate expression of thought and feeling by living creatures.

3. Language is separate from all other forms of communication.
Language is COMPLEX!
Language is separate from all other forms of communication.
Language is what makes humans, human.
Washoe was the first non human to learn human language in the form of American Sign Language. She however was not able to vocalize that language as she lacked the articulatory capacity to do so.

4. The extended definition
(c) the articulate or inarticulate expression of thought and feeling by living creatures
is widely regarded as a far stretch of the concept of language and is a source of controversy amoung linguists

5. Characteristics of Language
Language is:
HUMAN
SYSTEMATIC
EVOLUTIONARY
SYMBOLIC

6. Language as HUMAN
The parrot can be taught to reproduce sound sequences.
It cannot be taught to formulate sentences on its own.
Animals use sound and movement to initiate mating but cannot convey how it feels about the shortage of food supplies.

7. Language as Systematic
It uses various systems:
Sound
Grammar

8. SOUND
Sound is a system that each language has patterns for that are recognizable to its speakers.
Do you recognize any of these words?
Cinquo
Briskve
Merci
Gracias
Froid
Sounds take on meaning in a language only when they are combined in certain ways that are recognizable to the speakers.

9. “Often to goes he the market” “He often goes to the market.”
GRAMMAR
This is the set of rules that govern how the words of the language are put together to make meaning.
“Often to goes he the market”
Would not qualify as an English sentence
However :
“He often goes to the market.”
Would be accepted as it is now placed in the correct order.

10. GRAMMAR Word order is critical to meaning.
Consider the way in which a simple sentence can acquire different meanings depending on the word order.
You are there.
There you are!
Are you there?

11. “He often goes to the market.”
Activity:
Choose the appropriate words to replace the word ‘goes’ in the sentence
“He often goes to the market.”
car, of, runs, circular, bright, pencils, there, but, rides
You should notice that only a verb would be suitable in that word position.

12. Apart from having to use a particular type of word, in this case a verb, grammatical rules are even more specific and the space cannot be filled by just any verb.

13. “He often ________ to the market.”
Activity:
Which of the following verbs would fit the sentence?
“He often ________ to the market.”
shuffles, kisses, jumps, dances, sits, cries, eats, sings, flies, hears

14. Each language has its own set of rules, which must be employed for the effective transfer of meaning.

15. Language as SYMBOLIC
It uses words as representations or symbols of ideas.
In order for language to make sense there must be commonly understood or accepted meanings attributed to its symbols.

16. Sorrow anger disgust strength pride love embarrassment
Consider the following words. What do they symbolize? Do you think all English speakers mean the same thing when they say those words?
Sorrow anger disgust strength
pride love embarrassment

17. Dictionaries are records of the symbolic meaning of words in a language.

18. Language as EVOLUTIONARY
Language changes over time.
The invention of new words takes place over time.
Can you think of any words that was recently added to the English dictionary?

19. Personal research! 
Try to find out when the following words became part of the English language:
Computer
Nuclear
Aeroplane
Television
Atom
genetics

20. Changes in meaning are another way in which language evolves.
These changes occur when a significant group of persons persistently use a word (symbol) to mean something other than its traditionally accepted definition.

21. Changes in meaning WORD OLDER MEANING MODERN MEANING Gay
Carefree, happy
Homosexual
Nice
Stupid, foolish
Pleasant, agreeable
Girl
Any young person
Female young person
Manufacture
Make by hand
Produce artificially by hand of machinery
Tell
Count
Say, inform
Meat
Any food
Food from animal flesh

22. Discuss with your classmates some words that you think are in the process of evolution or which have recently acquired new meanings. What may account for the changes?

23. SUMMARY
Language is a system of communication with its own set of conventions or special words.
Characteristics of language:
Human
Systematic
Symbolic
Evolutionary

24. Recap Quiz Define language. What is unique about language?
How is language systematic?
Why is word order critical to meaning in language?
What type of symbol is used for the English language?
Explain why a word of your choice has evolved through time.