The difference between Lead-in and Preface
When used as nouns, lead-in means an introduction, whereas preface means the beginning or introductory portion that comes before the main text of a document or book.
Preface is also verb with the meaning: to introduce or make a comment before (the main point).
check bellow for the other definitions of Lead-in and Preface
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Lead-in as a noun:
An introduction; something that leads into the beginning of something.
Examples:
"After the long lead-in, the climax of the story was a disappointment."
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Lead-in as a noun:
A region of data at the beginning of a compact disc, holding the table of contents.
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Lead-in as a noun (journalism):
A short phrase that begins the caption of a photograph.
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Preface as a noun:
The beginning or introductory portion that comes before the main text of a document or book.
Examples:
"synonyms: forespeech foretalk foreword introduction proem prologue Thesaurus:foreword"
"The book included a brief preface by a leading expert in the field."
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Preface as a noun:
An introduction, or series of preliminary remarks.
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Preface as a noun (Roman Catholic):
The prelude or introduction to the canon of the Mass.
Examples:
"synonyms: prelude"
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Preface as a noun:
A title or epithet.
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Preface as a verb (transitive):
To introduce or make a comment before (the main point).
Examples:
"Let me preface this by saying that I don't know him that well."
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Preface as a verb (transitive):
To give a preface to.
Examples:
"to preface a book"