fieldwork

IPA: fˈiɫdwɝk

(uncountable, agriculture) Work done out in the fields as opposed to that done elsewhere on the farm (e.g., barn, house, outbuildings, office).
(uncountable) Work done out in the real world rather than in controlled conditions
(in scientific research) The collection of raw data in the field, field research, field study, field studies.
(countable, rare) A temporary fortification built by troops in the field; a defensive earthwork in the field.

field work

IPA: fˈiɫdwˈɝk