basic. Language can convey objective information of a referential kind, and it can also express the feeling of someone.
3. Theory of Etymology
According to Onions, e tymology has been briefly defined as „the origin,
formation,  and  development of  a  word‟.  For  words  derived  from  French,  the
ultimate source is given where possible, and the same treatment is given to many Latin  originals  from  which  the  English  has  directly  or  mediately  been  derived
1966 : vii. Since  literate  Englishmen  have  been  acquainted  with  both  French  and
Latin throughout the Middle Ages and down to our own times, either channel, or both,  could  be  assumed  as  the  means  of  entry  into  English,  other  things  being
equal 1966 : vii-viii. As  Onions  stated  in  The  Oxford  Dictionary  of  English  Etymology,  the
etymologist always added the exact time of each word. As time goes by, we can see  the  development  of  the  words  that  we  can  conclude  it  as  progressive
development. The  etymologist  might  be  content  to  give  the  earliest  recorded  date
of  each  word,  with  its  previous  history,  whether  of  English  or Germanic  descent  or  admitted  to  citizenship  from  other  languages,
thus  accounting  for  their  „origin  and  formation‟.  There  remains, however,  the  „development‟  of  the  word,  that  is,  its  progressive
development  in  form  and  sense  in  English.  This  is  every  whit  as important,  and  to  many  whose  interests  are  the  history  of  words  in
English  rather  than  their  remorter  ancestry,  the  more  useful  and important function of etymology 1966 : viii.
An etymology is the history of a linguistic form, such as a word; the same
term is also used for the study of word histories. A dictionary etymology tells us what  is  known  of  an  English  word  before  it  became  the  word  entered  in  that
dictionary. If the word was created in English, the etymology shows, to whatever extent  is  not  already  obvious  from  the  shape  of  the  word,  what  materials  were
used to form it. If the word was borrowed into English, the etymology traces the borrowing process backward from the point at which the word entered English to
the earliest records of the ancestral language. Where it is relevant, an etymology notes  words  from  other  languages  that  are  related  to  the  word  in  the  dictionary
entry, but that are not in the direct line of borrowing.
4. Theory of Distinctive Feature
Based  on  Fromkin  in  the  book  An  Introduction  to  Language,  distinctive feature  organizes  language  by  defining  groups  of  sounds  which  may  exhibit
similar sound patterns. When  a  feature  distinguishes  one  phoneme  from  another  it  is  a
distinctive feature or phonemic feature. When two words are exactly alike  phonetically  except  for  one  feature,  the  phonetic  difference  is
distinctive,  since  this  difference  alone  accounts  for  the  contrast  or difference in meaning 1996: 256.
Usually  a  single  feature  has  two  values,  plus  +,  which  means  its presence, and minus -, which means its absence. E.g. p is [-voiced] and b is
[+voiced], and if we want to call this feature „voiceless‟ we can specify b as [-