similar vs. similarly

similar

adjective

  1. having a likeness or resemblance, especially in a general way.

    two similar houses.

    Synonyms: like
    Antonyms: different

  2. Geometry.,  (of figures) having the same shape; having corresponding sides proportional and corresponding angles equal.

    similar triangles.

  3. Mathematics.,  (of two square matrices) related by means of a similarity transformation.

similarly

adverb

  1. in a way that shows a general but not exact resemblance.

    The lab charges anywhere from $50 to $100 per blood test; other procedures are priced similarly.