=As= is an adjective, in extensive use.  It means the, this, that, these, the same, etc.  It is a defining word of the first kind.  You practice as you have been taught—­the same duties or principles understood.  We use language as we have learned it; in the same way or manner.  It is often associated with other words to particularly specify the way, manner, or degree, in which something is done or compared.  I can go as well as you.  In the same well, easy, convenient way or manner you can go, I can go in the same way.  He was as learned, as pious, as benevolent, as brave, as faithful, as ardent.  These are purely adjectives, used to denote the degree of the likeness or similarity between the things compared.  Secondary words are often added to this, to aid the distinction or definition; as, (the same illustrated,) He is just as willing.  I am quite as well pleased without it. As, like many other adjectives, often occurs without a noun expressed, in which case it was formerly parsed by Murray himself as (like, or the same) a relative pronoun; as, “And indeed it seldom at any period extends to the tip, as happens in acute diseases.”—­Dr. Sweetster. “The ground I have assumed is tenable, as will appear.”—­Webster. “Bonaparte had a special motive in decorating Paris, for ’Paris is France, as has often been observed.”—­Channing. “The words are such as seem.”—­Murray’s Reader! p. 16, intro.

=So= has nearly the same signification as the word last noticed, and is frequently used along with it, to define the other member of the comparison. As far as I can understand, so far I approve. As he directed, so I obeyed.  It very often occurs as a secondary adjective; as, “In pious and benevolent offices so simple, so minute, so steady, so habitual, that they will carry,” etc.  “He pursued a course so unvarying.”—­Channing.

These words are the most important of any small ones in our vocabulary, because (for this cause, be this the cause, this is the cause) they are the most frequently used; and yet there are no words so little understood, or so much abused by grammarians, as these are.

We have barely time to notice the remaining parts of speech.  “Conjunctions” are defined to be a “part of speech void of signification, but so formed as to help signification, by making two or more significant sentences to be one significant sentence.”  Mr. Harris gives about forty “species.”  Murray admits of only the dis-junctive and copulative, and reduces the whole list of words to twenty-four.  But what is meant by a dis-junctive con-junctive word, is left for you to determine.  It must be in keeping with indefinite defining articles, and post-positive pre-positions.  He says, “it joins words, but disjoins the sense."[22] And what is a word with out sense,” pray tell us?  If “words are the signs of ideas,” how, in the name of reason, can you give the sign and separate the sense?  You can as well separate the shadow from the substance, or a quality from matter.