study vs investigate

Some examples from the web:

• Our current volunteer study only pays 20 bucks.
• During paintball in the study room with colonel mustard.
• 12 study subjects can't prove anything conclusively.
• Lipski's posting sophomore study buddies.
• A requirement for emergency study sessions.
• Scully refuses to present my study.
• Right, render environment medical study room.
• You just need a study partner.
• Counsel knows there is no buried study.
• Cryptozoology is the study of hidden animals.
• FDA approval... pending double-blind study.
• I study ancient peoples and cultures.
• Please consider this library your study.
• My study deals with extracting secrets from unwilling subjects.
• Spitzer's study caused controversy and attracted media attention.
• Confucianism is a study and theory of relationships especially within hierarchies.
• One study reported a possible association with rheumatoid arthritis.
• The castle at Meybod is currently under study.
• However, a 2015 study doubted Lindgren's interpretation.
• The feasibility study for the Greece-Italy pipeline was conducted in 2003.

Some examples from the web:

• But now Ricard can investigate the matter.
• Your orders were to investigate and report.
• Attorney agrees to investigate my wife's murder.
• Inspector... please investigate this thoroughly.
• The Senate Intelligence Committee authorised a panel to investigate the problem.
• NASA wants us to investigate scientists and astronauts.
• We'll investigate next week on Sinister Sites.
• Delle Seyah sent her people to investigate.
• You send men to investigate its contents.
• MINUSCA sent a mission to investigate the incident.
• Request permission to investigate this vehicle.
• Strengthen local capacities to investigate organised criminal activities.
• Optical devices help us to investigate world around.
• Both works investigate the boundaries between human and non-human.
• This partnership tries to investigate and find solutions to this question.
• Sometimes an Inquiry Commission was constituted to investigate the charge.
• A murder investigation requires that we find suspects to investigate.
• But the physician and scientist must investigate all possibilities.
• The woman from the college who wants to investigate Rose Red called again.
• Constable Ichabod Crane, sent from New York to investigate the murders.