No, approved is not a synonym of referred. Approved means something has been accepted or agreed upon, while referred means to direct someone to a different source or person for information or assistance.
'Approved' or 'validated'.
There is no synonym for venom. Venom is often referred incorrectly to as poison if that helps.
The Pope is sometimes referred to as His Holiness.
authorized, recognized, approved, legitimate
journey by sea is often referred as voyage
approved, accredited, certified, endorsed, licensed, sanctioned, validated
verified, guaranteed, validated, confirmed, recognized, licensed, authorized, approved, warranted
Autotrophs are plants, and may be referred to as autophytes or producers.
allowed, approved, fitting, right, correct, good, suitable, in good condition
There is no synonym for "adobe," the clay brick mixture. If you mean the image editing software, it's usually referred to as Photoshop, sometimes CS4 for the whole suite.
Something that has been confirmed has been approved or established and is not likely to be changed. Synonyms would be committed or steadfast.
Sin, Iniquity, wrongdoing, contravention and very often referred to as a debt we fall into with God.