Field guide and Reference book

Field guide noun - A guidebook describing natural objects of some type that might be encountered in the field.

Reference book and field guide are semantically related. In some cases you can use "Reference book" instead a noun phrase "Field guide".

Reference book noun - A book to which you can refer for authoritative facts.

Field guide and reference book are semantically related. You can use "Field guide" instead a noun phrase "Reference book".